122031990 has 48 divisors (see below), whose sum is σ = 325031616. Its totient is φ = 31747200.

The previous prime is 122031989. The next prime is 122032007. The reversal of 122031990 is 99130221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12846 + ... + 20225.

It is an arithmetic number, because the mean of its divisors is an integer number (6771492).

Almost surely, 2^122031990 is an apocalyptic number.

122031990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122031990 is an abundant number, since it is smaller than the sum of its proper divisors (202999626).

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

122031990 is a wasteful number, since it uses less digits than its factorization.

122031990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33125 (or 33122 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 122031990 is about 11046.8090415287. The cubic root of 122031990 is about 496.0109123293.

The spelling of 122031990 in words is "one hundred twenty-two million, thirty-one thousand, nine hundred ninety".