Il numero romano MMCDXXX nel sistema decimale vale: 2430.
MMCDXXX in latino si scrive duo milia quadringenti triginta,
mentre in italiano duemilaquattrocentotrenta.
MMCDXI, MMCDXII, MMCDXIII, MMCDXIV, MMCDXV, MMCDXVI, MMCDXVII, MMCDXVIII, MMCDXIX, MMCDXX, MMCDXXI, MMCDXXII, MMCDXXIII, MMCDXXIV, MMCDXXV, MMCDXXVI, MMCDXXVII, MMCDXXVIII, MMCDXXIX, MMCDXXXI, MMCDXXXII, MMCDXXXIII, MMCDXXXIV, MMCDXXXV, MMCDXXXVI, MMCDXXXVII, MMCDXXXVIII, MMCDXXXIX, MMCDXL, MMCDXLI, MMCDXLII, MMCDXLIII, MMCDXLIV, MMCDXLV, MMCDXLVI, MMCDXLVII, MMCDXLVIII, MMCDXLIX