12457923 has 12 divisors (see below), whose sum is σ = 17646360. Its totient is φ = 7816192.

The previous prime is 12457919. The next prime is 12457931. The reversal of 12457923 is 32975421.

It is not a de Polignac number, because 12457923 - 2² = 12457919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12457933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6318 + ... + 8051.

It is an arithmetic number, because the mean of its divisors is an integer number (1470530).

Almost surely, 2^12457923 is an apocalyptic number.

12457923 is a deficient number, since it is larger than the sum of its proper divisors (5188437).

12457923 is a wasteful number, since it uses less digits than its factorization.

12457923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14406 (or 14389 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 12457923 is about 3529.5783034238. The cubic root of 12457923 is about 231.8187434330.

The spelling of 12457923 in words is "twelve million, four hundred fifty-seven thousand, nine hundred twenty-three".