122656356 has 30 divisors (see below), whose sum is σ = 320648790. Its totient is φ = 40885344.

The previous prime is 122656351. The next prime is 122656361. The reversal of 122656356 is 653656221.

It is a happy number.

122656356 is a `hidden beast` number, since 12 + 2 + 6 + 5 + 635 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (122656351) and next prime (122656361).

It can be written as a sum of positive squares in only one way, i.e., 118592100 + 4064256 = 10890^2 + 2016^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 122656356.

It is not an unprimeable number, because it can be changed into a prime (122656351) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 188961 + ... + 189608.

It is an arithmetic number, because the mean of its divisors is an integer number (10688293).

Almost surely, 2^122656356 is an apocalyptic number.

It is an amenable number.

122656356 is an abundant number, since it is smaller than the sum of its proper divisors (197992434).

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

122656356 is a wasteful number, since it uses less digits than its factorization.

122656356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378585 (or 378574 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 122656356 is about 11075.0330022082. The cubic root of 122656356 is about 496.8554058489.

The spelling of 122656356 in words is "one hundred twenty-two million, six hundred fifty-six thousand, three hundred fifty-six".