Il numero romano MMDCCCXLII nel sistema decimale vale: 2842.
MMDCCCXLII in latino si scrive duo milia octingenti quadraginta duo,
mentre in italiano duemilaottocentoquarantadue.
MMDCCCXXIII, MMDCCCXXIV, MMDCCCXXV, MMDCCCXXVI, MMDCCCXXVII, MMDCCCXXVIII, MMDCCCXXIX, MMDCCCXXX, MMDCCCXXXI, MMDCCCXXXII, MMDCCCXXXIII, MMDCCCXXXIV, MMDCCCXXXV, MMDCCCXXXVI, MMDCCCXXXVII, MMDCCCXXXVIII, MMDCCCXXXIX, MMDCCCXL, MMDCCCXLI, MMDCCCXLIII, MMDCCCXLIV, MMDCCCXLV, MMDCCCXLVI, MMDCCCXLVII, MMDCCCXLVIII, MMDCCCXLIX, MMDCCCL, MMDCCCLI, MMDCCCLII, MMDCCCLIII, MMDCCCLIV, MMDCCCLV, MMDCCCLVI, MMDCCCLVII, MMDCCCLVIII, MMDCCCLIX, MMDCCCLX, MMDCCCLXI