12921875 has 14 divisors (see below), whose sum is σ = 16171668. Its totient is φ = 10325000.

The previous prime is 12921863. The next prime is 12921893. The reversal of 12921875 is 57812921.

It is not a de Polignac number, because 12921875 - 2¹⁶ = 12856339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15212 + ... + 16038.

Almost surely, 2^12921875 is an apocalyptic number.

12921875 is a deficient number, since it is larger than the sum of its proper divisors (3249793).

12921875 is an frugal number, since it uses more digits than its factorization.

12921875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 832 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 12921875 is about 3594.7009611371. The cubic root of 12921875 is about 234.6615014879.

The spelling of 12921875 in words is "twelve million, nine hundred twenty-one thousand, eight hundred seventy-five".