126705904 has 20 divisors (see below), whose sum is σ = 264377176. Its totient is φ = 58479552.

The previous prime is 126705899. The next prime is 126705979. The reversal of 126705904 is 409507621.

It is a super-2 number, since 2×126705904² = 32108772216914432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126705904.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 304374 + ... + 304789.

Almost surely, 2^126705904 is an apocalyptic number.

It is an amenable number.

126705904 is an abundant number, since it is smaller than the sum of its proper divisors (137671272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126705904 is a wasteful number, since it uses less digits than its factorization.

126705904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609184 (or 609178 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 126705904 is about 11256.3717067268. The cubic root of 126705904 is about 502.2642693569.

The spelling of 126705904 in words is "one hundred twenty-six million, seven hundred five thousand, nine hundred four".