Il numero romano MCCCXLII nel sistema decimale vale: 1342.
MCCCXLII in latino si scrive mille trecenti quadraginta duo,
mentre in italiano milletrecentoquarantadue.
MCCCXXIII, MCCCXXIV, MCCCXXV, MCCCXXVI, MCCCXXVII, MCCCXXVIII, MCCCXXIX, MCCCXXX, MCCCXXXI, MCCCXXXII, MCCCXXXIII, MCCCXXXIV, MCCCXXXV, MCCCXXXVI, MCCCXXXVII, MCCCXXXVIII, MCCCXXXIX, MCCCXL, MCCCXLI, MCCCXLIII, MCCCXLIV, MCCCXLV, MCCCXLVI, MCCCXLVII, MCCCXLVIII, MCCCXLIX, MCCCL, MCCCLI, MCCCLII, MCCCLIII, MCCCLIV, MCCCLV, MCCCLVI, MCCCLVII, MCCCLVIII, MCCCLIX, MCCCLX, MCCCLXI