12656042 has 16 divisors (see below), whose sum is σ = 21814272. Its totient is φ = 5394480.

The previous prime is 12656023. The next prime is 12656047. The reversal of 12656042 is 24065621.

It is not an unprimeable number, because it can be changed into a prime (12656047) 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 7 ways as a sum of consecutive naturals, for example, 308 + ... + 5040.

It is an arithmetic number, because the mean of its divisors is an integer number (1363392).

Almost surely, 2^12656042 is an apocalyptic number.

12656042 is a deficient number, since it is larger than the sum of its proper divisors (9158230).

12656042 is a wasteful number, since it uses less digits than its factorization.

12656042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4933.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 12656042 is about 3557.5331340692. The cubic root of 12656042 is about 233.0411612890.

The spelling of 12656042 in words is "twelve million, six hundred fifty-six thousand, forty-two".