2139

2139 is a natural number that comes after 2138 and before 2140. It is a composite number with prime factorization 3 × 23 × 31, and it is divisible by 3, 23, and 31. The sum of its digits is 15, so it is divisible by 3.

Representations of 2139 include: in binary, 100001011011; in octal, 4133; in hexadecimal, 0x85B; and in Roman numerals, MMCCXXXIX.

Astronomy: The designation 2139 Ulugbek refers to a minor planet in the main asteroid belt named after the 15th-century Uzbek astronomer Ulugh Beg. It is one of many small bodies orbiting the Sun and cataloged with a numeric designation in the order of discovery.

Calendar and culture: As a year, 2139 CE would be a future year in the Gregorian calendar. The number 2139 may also appear in fiction and speculative contexts to denote events set in a distant future, or as part of numerical naming schemes in various media.