Il numero romano MMMMDCCXLII nel sistema decimale vale: 4742.
MMMMDCCXLII in latino si scrive quattuor milia septingenti quadraginta duo,
mentre in italiano quattromilasettecentoquarantadue.
MMMMDCCXXIII, MMMMDCCXXIV, MMMMDCCXXV, MMMMDCCXXVI, MMMMDCCXXVII, MMMMDCCXXVIII, MMMMDCCXXIX, MMMMDCCXXX, MMMMDCCXXXI, MMMMDCCXXXII, MMMMDCCXXXIII, MMMMDCCXXXIV, MMMMDCCXXXV, MMMMDCCXXXVI, MMMMDCCXXXVII, MMMMDCCXXXVIII, MMMMDCCXXXIX, MMMMDCCXL, MMMMDCCXLI, MMMMDCCXLIII, MMMMDCCXLIV, MMMMDCCXLV, MMMMDCCXLVI, MMMMDCCXLVII, MMMMDCCXLVIII, MMMMDCCXLIX, MMMMDCCL, MMMMDCCLI, MMMMDCCLII, MMMMDCCLIII, MMMMDCCLIV, MMMMDCCLV, MMMMDCCLVI, MMMMDCCLVII, MMMMDCCLVIII, MMMMDCCLIX, MMMMDCCLX, MMMMDCCLXI