122872090 has 32 divisors (see below), whose sum is σ = 255472704. Its totient is φ = 42051840.

The previous prime is 122872033. The next prime is 122872093. The reversal of 122872090 is 90278221.

It is not an unprimeable number, because it can be changed into a prime (122872093) 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 15 ways as a sum of consecutive naturals, for example, 30984 + ... + 34723.

It is an arithmetic number, because the mean of its divisors is an integer number (7983522).

Almost surely, 2^122872090 is an apocalyptic number.

122872090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122872090 is an abundant number, since it is smaller than the sum of its proper divisors (132600614).

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

122872090 is a wasteful number, since it uses less digits than its factorization.

122872090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65742.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 122872090 is about 11084.7683782748. The cubic root of 122872090 is about 497.1465330982.

The spelling of 122872090 in words is "one hundred twenty-two million, eight hundred seventy-two thousand, ninety".