Il numero romano MMCDXLII nel sistema decimale vale: 2442.
MMCDXLII in latino si scrive duo milia quadringenti quadraginta duo,
mentre in italiano duemilaquattrocentoquarantadue.
MMCDXXIII, MMCDXXIV, MMCDXXV, MMCDXXVI, MMCDXXVII, MMCDXXVIII, MMCDXXIX, MMCDXXX, MMCDXXXI, MMCDXXXII, MMCDXXXIII, MMCDXXXIV, MMCDXXXV, MMCDXXXVI, MMCDXXXVII, MMCDXXXVIII, MMCDXXXIX, MMCDXL, MMCDXLI, MMCDXLIII, MMCDXLIV, MMCDXLV, MMCDXLVI, MMCDXLVII, MMCDXLVIII, MMCDXLIX, MMCDL, MMCDLI, MMCDLII, MMCDLIII, MMCDLIV, MMCDLV, MMCDLVI, MMCDLVII, MMCDLVIII, MMCDLIX, MMCDLX, MMCDLXI