12942657 has 24 divisors (see below), whose sum is σ = 23010624. Its totient is φ = 6826464.

The previous prime is 12942641. The next prime is 12942659. The reversal of 12942657 is 75624921.

12942657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12942657 - 2⁴ = 12942641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12942659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7083 + ... + 8720.

It is an arithmetic number, because the mean of its divisors is an integer number (958776).

Almost surely, 2^12942657 is an apocalyptic number.

It is an amenable number.

12942657 is a deficient number, since it is larger than the sum of its proper divisors (10067967).

12942657 is a wasteful number, since it uses less digits than its factorization.

12942657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15829 (or 15826 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 12942657 is about 3597.5904436164. The cubic root of 12942657 is about 234.7872346154.

The spelling of 12942657 in words is "twelve million, nine hundred forty-two thousand, six hundred fifty-seven".