122555904 has 80 divisors (see below), whose sum is σ = 331271952. Its totient is φ = 40255488.

The previous prime is 122555899. The next prime is 122555933. The reversal of 122555904 is 409555221.

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, 111582 + ... + 112674.

Almost surely, 2^122555904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122555904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165635976).

122555904 is an abundant number, since it is smaller than the sum of its proper divisors (208716048).

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

122555904 is an equidigital number, since it uses as much as digits as its factorization.

122555904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187 (or 1171 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 122555904 is about 11070.4970078132. The cubic root of 122555904 is about 496.7197320797.

The spelling of 122555904 in words is "one hundred twenty-two million, five hundred fifty-five thousand, nine hundred four".