126857656 has 16 divisors (see below), whose sum is σ = 238353840. Its totient is φ = 63296640.

The previous prime is 126857641. The next prime is 126857671. The reversal of 126857656 is 656758621.

It is an interprime number because it is at equal distance from previous prime (126857641) and next prime (126857671).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12385 + ... + 20176.

It is an arithmetic number, because the mean of its divisors is an integer number (14897115).

Almost surely, 2^126857656 is an apocalyptic number.

It is an amenable number.

126857656 is a deficient number, since it is larger than the sum of its proper divisors (111496184).

126857656 is a wasteful number, since it uses less digits than its factorization.

126857656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33054 (or 33050 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 126857656 is about 11263.1104052122. The cubic root of 126857656 is about 502.4647051603.

The spelling of 126857656 in words is "one hundred twenty-six million, eight hundred fifty-seven thousand, six hundred fifty-six".