Il numero romano MMDCCCXL nel sistema decimale vale: 2840.
MMDCCCXL in latino si scrive duo milia octingenti quadraginta,
mentre in italiano duemilaottocentoquaranta.
MMDCCCXXI, MMDCCCXXII, MMDCCCXXIII, MMDCCCXXIV, MMDCCCXXV, MMDCCCXXVI, MMDCCCXXVII, MMDCCCXXVIII, MMDCCCXXIX, MMDCCCXXX, MMDCCCXXXI, MMDCCCXXXII, MMDCCCXXXIII, MMDCCCXXXIV, MMDCCCXXXV, MMDCCCXXXVI, MMDCCCXXXVII, MMDCCCXXXVIII, MMDCCCXXXIX, MMDCCCXLI, MMDCCCXLII, MMDCCCXLIII, MMDCCCXLIV, MMDCCCXLV, MMDCCCXLVI, MMDCCCXLVII, MMDCCCXLVIII, MMDCCCXLIX, MMDCCCL, MMDCCCLI, MMDCCCLII, MMDCCCLIII, MMDCCCLIV, MMDCCCLV, MMDCCCLVI, MMDCCCLVII, MMDCCCLVIII, MMDCCCLIX