12556142 has 8 divisors (see below), whose sum is σ = 18883800. Its totient is φ = 6261544.

The previous prime is 12556139. The next prime is 12556153. The reversal of 12556142 is 24165521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7292 + ... + 8847.

It is an arithmetic number, because the mean of its divisors is an integer number (2360475).

Almost surely, 2^12556142 is an apocalyptic number.

12556142 is a deficient number, since it is larger than the sum of its proper divisors (6327658).

12556142 is a wasteful number, since it uses less digits than its factorization.

12556142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16530.

The product of its digits is 2400, while the sum is 26.

The square root of 12556142 is about 3543.4646886910. The cubic root of 12556142 is about 232.4263735729.

The spelling of 12556142 in words is "twelve million, five hundred fifty-six thousand, one hundred forty-two".