Il numero romano MMMMDCCXX nel sistema decimale vale: 4720.
MMMMDCCXX in latino si scrive quattuor milia septingenti viginti,
mentre in italiano quattromilasettecentoventi.
MMMMDCCI, MMMMDCCII, MMMMDCCIII, MMMMDCCIV, MMMMDCCV, MMMMDCCVI, MMMMDCCVII, MMMMDCCVIII, MMMMDCCIX, MMMMDCCX, MMMMDCCXI, MMMMDCCXII, MMMMDCCXIII, MMMMDCCXIV, MMMMDCCXV, MMMMDCCXVI, MMMMDCCXVII, MMMMDCCXVIII, MMMMDCCXIX, MMMMDCCXXI, MMMMDCCXXII, MMMMDCCXXIII, MMMMDCCXXIV, MMMMDCCXXV, MMMMDCCXXVI, MMMMDCCXXVII, MMMMDCCXXVIII, MMMMDCCXXIX, MMMMDCCXXX, MMMMDCCXXXI, MMMMDCCXXXII, MMMMDCCXXXIII, MMMMDCCXXXIV, MMMMDCCXXXV, MMMMDCCXXXVI, MMMMDCCXXXVII, MMMMDCCXXXVIII, MMMMDCCXXXIX