Il numero romano MMMDCCCXLII nel sistema decimale vale: 3842.
MMMDCCCXLII in latino si scrive tria milia octingenti quadraginta duo,
mentre in italiano tremilaottocentoquarantadue.
MMMDCCCXXIII, MMMDCCCXXIV, MMMDCCCXXV, MMMDCCCXXVI, MMMDCCCXXVII, MMMDCCCXXVIII, MMMDCCCXXIX, MMMDCCCXXX, MMMDCCCXXXI, MMMDCCCXXXII, MMMDCCCXXXIII, MMMDCCCXXXIV, MMMDCCCXXXV, MMMDCCCXXXVI, MMMDCCCXXXVII, MMMDCCCXXXVIII, MMMDCCCXXXIX, MMMDCCCXL, MMMDCCCXLI, MMMDCCCXLIII, MMMDCCCXLIV, MMMDCCCXLV, MMMDCCCXLVI, MMMDCCCXLVII, MMMDCCCXLVIII, MMMDCCCXLIX, MMMDCCCL, MMMDCCCLI, MMMDCCCLII, MMMDCCCLIII, MMMDCCCLIV, MMMDCCCLV, MMMDCCCLVI, MMMDCCCLVII, MMMDCCCLVIII, MMMDCCCLIX, MMMDCCCLX, MMMDCCCLXI