MMDCCXLII

MMDCCXLII is the Roman numeral for the number 2742. It is constructed as MM (2000) + D (500) + CC (200) + XL (40) + II (2), totaling 2742. This formation uses the standard subtractive notation for 40 (XL) within an overall additive structure.

In historical contexts, Roman numerals appear on inscriptions, monuments, and manuscripts to denote years or catalog numbers. In modern usage, they are often employed for stylistic or ceremonial purposes—on clock faces, documentary titles, or puzzles. A year written as MMDCCXLII would indicate 2742 CE, a point far in the future from the present.

Numerical properties of 2742 include that it is even and composite. Its prime factorization is 2 × 3 × 457. The digit sum is 2 + 7 + 4 + 2 = 15.