RomanNumeral

RomanNumeral[n] gives a string corresponding to the Roman numeral form of the integer n.

Examples

Convert integer to Roman numeral:

RomanNumeral[42]
(* "XLII" *)

Convert multiple values:

Table[{i, RomanNumeral[i]}, {i, 1, 10}]
(* {{1, "I"}, {2, "II"}, {3, "III"}, ...} *)

Please visit the official Wolfram Language Reference for more details.