12656742 has 32 divisors (see below), whose sum is σ = 29865984. Its totient is φ = 3499200.

The previous prime is 12656737. The next prime is 12656783. The reversal of 12656742 is 24765621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3559 + ... + 6162.

It is an arithmetic number, because the mean of its divisors is an integer number (933312).

Almost surely, 2^12656742 is an apocalyptic number.

12656742 is an abundant number, since it is smaller than the sum of its proper divisors (17209242).

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

12656742 is a wasteful number, since it uses less digits than its factorization.

12656742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9764.

The product of its digits is 20160, while the sum is 33.

The square root of 12656742 is about 3557.6315154889. The cubic root of 12656742 is about 233.0454576771.

The spelling of 12656742 in words is "twelve million, six hundred fifty-six thousand, seven hundred forty-two".