122578556 has 12 divisors (see below), whose sum is σ = 214648392. Its totient is φ = 61250448.

The previous prime is 122578541. The next prime is 122578571. The reversal of 122578556 is 655875221.

It is an interprime number because it is at equal distance from previous prime (122578541) and next prime (122578571).

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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, 1910 + ... + 15773.

It is an arithmetic number, because the mean of its divisors is an integer number (17887366).

Almost surely, 2^122578556 is an apocalyptic number.

It is an amenable number.

122578556 is a deficient number, since it is larger than the sum of its proper divisors (92069836).

122578556 is a wasteful number, since it uses less digits than its factorization.

122578556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19420 (or 19418 counting only the distinct ones).

The product of its digits is 168000, while the sum is 41.

The square root of 122578556 is about 11071.5200401752. The cubic root of 122578556 is about 496.7503330867.

The spelling of 122578556 in words is "one hundred twenty-two million, five hundred seventy-eight thousand, five hundred fifty-six".