Filed Pursuant to Rule 424(b)(3)
                                                    Registration No.: 333-132911

                              Subject to Completion
              Preliminary Pricing Supplement dated February 2, 2007

PRICING SUPPLEMENT
- ------------------
(To MTN Prospectus Supplement, general Prospectus Supplement and Prospectus
dated March 31, 2006)
Pricing Supplement Number:


                            Merrill Lynch & Co., Inc.


                          Medium-Term Notes, Series C
                   Due Nine Months or More from Date of Issue


                      Fixed Rate Notes due February , 2017

Principal Amount:

Issue Price:                The Notes will be offered at varying prices related
                            to prevailing market prices.

Denominations:              $1,000 and integral multiples thereof

Purchase Price
to Underwriter:                          % of Principal Amount

CUSIP Number:

Interest Rate:                   %, calculated on the basis of a 360 day year of
                            twelve 30 day months (unadjusted).

Original Issue Date:        February     , 2007

Stated Maturity Date:       February    , 2017

Interest Payment Dates:     February      and August        of each year,
                            commencing August     , 2007 subject to the
                            following Business Day convention.

Repayment at the Option
of the Holder:              The Notes cannot be repaid at the option of the
                            holder prior to the Stated Maturity Date.

Redemption at the Option
of the Company:             On and after February , 2008, the Notes will be
                            subject to redemption at the option of Merrill Lynch
                            & Co., Inc. (the "Company") in whole, but not in
                            part, on each Interest Payment Date upon 5 business
                            days' notice at a price equal to 100% of the
                            principal amount per Note plus accrued and unpaid
                            interest.

Form:                       The Notes will be issued in fully registered
                            book-entry form. As described in the accompanying
                            general prospectus supplement, upon issuance, all of
                            the Notes will be represented by one or more fully
                            registered global Notes. Each global Note will be
                            deposited with, or on behalf of, The Depository
                            Trust Company, otherwise known as DTC, or any
                            successor to it (the "depository"), as depositary,
                            and registered in the name of Cede & Co., DTC's
                            partnership nominee.

Trustee:                    The Bank of New York

Underwriter:                Merrill Lynch, Pierce, Fenner & Smith Incorporated
                            ("MLPF&S")

Business Day:               Any day other than a Saturday or Sunday that is
                            neither a legal holiday nor a day on which banking
                            institutions in The City of New York are authorized
                            or required by law, regulation or executive order to
                            close.

Dated:                      February    , 2007