126513656 has 32 divisors (see below), whose sum is σ = 244662240. Its totient is φ = 61285248.

The previous prime is 126513617. The next prime is 126513713. The reversal of 126513656 is 656315621.

It is a super-3 number, since 3×126513656³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81221 + ... + 82763.

It is an arithmetic number, because the mean of its divisors is an integer number (7645695).

Almost surely, 2^126513656 is an apocalyptic number.

It is an amenable number.

126513656 is a deficient number, since it is larger than the sum of its proper divisors (118148584).

126513656 is a wasteful number, since it uses less digits than its factorization.

126513656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863 (or 1859 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 126513656 is about 11247.8289460678. The cubic root of 126513656 is about 502.0101160377.

The spelling of 126513656 in words is "one hundred twenty-six million, five hundred thirteen thousand, six hundred fifty-six".