122756404 has 12 divisors (see below), whose sum is σ = 221753728. Its totient is φ = 59398200.

The previous prime is 122756401. The next prime is 122756423. The reversal of 122756404 is 404657221.

It is a super-2 number, since 2×122756404² = 30138269446022432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122756401) by changing a digit.

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, 494862 + ... + 495109.

Almost surely, 2^122756404 is an apocalyptic number.

It is an amenable number.

122756404 is a deficient number, since it is larger than the sum of its proper divisors (98997324).

122756404 is a wasteful number, since it uses less digits than its factorization.

122756404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990006 (or 990004 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 122756404 is about 11079.5489077850. The cubic root of 122756404 is about 496.9904603534.

The spelling of 122756404 in words is "one hundred twenty-two million, seven hundred fifty-six thousand, four hundred four".