12657042 has 12 divisors (see below), whose sum is σ = 27423630. Its totient is φ = 4219008.

The previous prime is 12657041. The next prime is 12657049. The reversal of 12657042 is 24075621.

12657042 is a `hidden beast` number, since 1 + 2 + 657 + 0 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11634921 + 1022121 = 3411^2 + 1011^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12656997 and 12657015.

It is not an unprimeable number, because it can be changed into a prime (12657041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 351567 + ... + 351602.

Almost surely, 2^12657042 is an apocalyptic number.

12657042 is an abundant number, since it is smaller than the sum of its proper divisors (14766588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12657042 is a wasteful number, since it uses less digits than its factorization.

12657042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703177 (or 703174 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 12657042 is about 3557.6736781217. The cubic root of 12657042 is about 233.0472989378.

The spelling of 12657042 in words is "twelve million, six hundred fifty-seven thousand, forty-two".