12942056 has 8 divisors (see below), whose sum is σ = 24266370. Its totient is φ = 6471024.

The previous prime is 12942047. The next prime is 12942067. The reversal of 12942056 is 65024921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7344100 + 5597956 = 2710^2 + 2366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808871 + ... + 808886.

Almost surely, 2^12942056 is an apocalyptic number.

It is an amenable number.

12942056 is a deficient number, since it is larger than the sum of its proper divisors (11324314).

12942056 is a wasteful number, since it uses less digits than its factorization.

12942056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617763 (or 1617759 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 12942056 is about 3597.5069145173. The cubic root of 12942056 is about 234.7836003974.

Adding to 12942056 its reverse (65024921), we get a palindrome (77966977).

The spelling of 12942056 in words is "twelve million, nine hundred forty-two thousand, fifty-six".