Il numero romano MMDXL nel sistema decimale vale: 2540.
MMDXL in latino si scrive duo milia quingenti quadraginta,
mentre in italiano duemilacinquecentoquaranta.
MMDXXI, MMDXXII, MMDXXIII, MMDXXIV, MMDXXV, MMDXXVI, MMDXXVII, MMDXXVIII, MMDXXIX, MMDXXX, MMDXXXI, MMDXXXII, MMDXXXIII, MMDXXXIV, MMDXXXV, MMDXXXVI, MMDXXXVII, MMDXXXVIII, MMDXXXIX, MMDXLI, MMDXLII, MMDXLIII, MMDXLIV, MMDXLV, MMDXLVI, MMDXLVII, MMDXLVIII, MMDXLIX, MMDL, MMDLI, MMDLII, MMDLIII, MMDLIV, MMDLV, MMDLVI, MMDLVII, MMDLVIII, MMDLIX