122875290 has 24 divisors (see below), whose sum is σ = 319475988. Its totient is φ = 32766720.

The previous prime is 122875283. The next prime is 122875297. The reversal of 122875290 is 92578221.

122875290 is a `hidden beast` number, since 122 + 8 + 7 + 529 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (122875283) and next prime (122875297).

It can be written as a sum of positive squares in 2 ways, for example, as 102272769 + 20602521 = 10113^2 + 4539^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122875297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 682551 + ... + 682730.

Almost surely, 2^122875290 is an apocalyptic number.

122875290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122875290 is an abundant number, since it is smaller than the sum of its proper divisors (196600698).

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

122875290 is a wasteful number, since it uses less digits than its factorization.

122875290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365294 (or 1365291 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 122875290 is about 11084.9127195481. The cubic root of 122875290 is about 497.1508488467.

The spelling of 122875290 in words is "one hundred twenty-two million, eight hundred seventy-five thousand, two hundred ninety".