PRICING SUPPLEMENT File No. 333-122639 (To Prospectus Supplement and Prospectus dated February 25, 2005) Rule 424(b)(3) Pricing Supplement Number: 2436 MERRILL LYNCH & CO., INC. MEDIUM-TERM NOTES, SERIES C DUE NINE MONTHS OR MORE FROM DATE OF ISSUE FLOATING RATE NOTES Principal Amount: $10,000,000 Original Issue Date: April 29, 2005 CUSIP Number: 59018YVF5 Stated Maturity Date: April 29, 2015 Issue Price: 100.05% Interest Calculation: Day Count Convention: [X] Regular Floating Rate Note [X] Actual/360 [ ] Inverse Floating Rate Note [ ] 30/360 (Fixed Interest Rate): [ ] Actual/Actual Interest Rate Basis: [X] LIBOR [ ] Commercial Paper Rate [ ] CMT Rate [ ] Eleventh District Cost of Funds Rate [ ] Prime Rate [ ] CD Rate [ ] Federal Funds Rate [ ] Other (see attached) [ ] Treasury Rate Designated CMT Page: Designated LIBOR Page: CMT Moneyline Telerate Page: LIBOR MoneylineTelerate Page: 3750 LIBOR Reuters Page: Index Maturity: Six Months Minimum Interest Rate: Not Applicable Spread: + 0.3475% Maximum Interest Rate: Not Applicable Initial Interest Rate: Calculated as if the Original Issue Spread Multiplier: Not Applicable Date was an Interest Reset Date Interest Reset Dates: Semi-annually, on the 29th of April and October, commencing on October 29, 2005, subject to modified following Business Day convention. Interest Payment Dates: Semi-annually, on the 29th of April and October, commencing on October 29, 2005, subject to modified following Business Day convention. Repayment at the Option of the Holder: The Notes cannot be repaid prior to the Stated Maturity Date. Redemption at the Option of the Company: The Notes cannot be redeemed prior to the Stated Maturity Date. Form: The Notes are being issued in fully registered book-entry form. Trustee: JPMorgan Chase Bank Underwriting Discount: 0.05% Dated: April 21, 2005