12920259 has 12 divisors (see below), whose sum is σ = 18936008. Its totient is φ = 7830240.

The previous prime is 12920249. The next prime is 12920261. The reversal of 12920259 is 95202921.

It is not a de Polignac number, because 12920259 - 2⁸ = 12920003 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12920239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17434 + ... + 18159.

Almost surely, 2^12920259 is an apocalyptic number.

12920259 is a deficient number, since it is larger than the sum of its proper divisors (6015749).

12920259 is a wasteful number, since it uses less digits than its factorization.

12920259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35618 (or 35607 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 12920259 is about 3594.4761788055. The cubic root of 12920259 is about 234.6517188829.

The spelling of 12920259 in words is "twelve million, nine hundred twenty thousand, two hundred fifty-nine".