122572990 has 32 divisors (see below), whose sum is σ = 233694720. Its totient is φ = 46158624.

The previous prime is 122572969. The next prime is 122572997. The reversal of 122572990 is 99275221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122572997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29799 + ... + 33661.

It is an arithmetic number, because the mean of its divisors is an integer number (7302960).

Almost surely, 2^122572990 is an apocalyptic number.

122572990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122572990 is a deficient number, since it is larger than the sum of its proper divisors (111121730).

122572990 is a wasteful number, since it uses less digits than its factorization.

122572990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 122572990 is about 11071.2686716564. The cubic root of 122572990 is about 496.7428142234.

The spelling of 122572990 in words is "one hundred twenty-two million, five hundred seventy-two thousand, nine hundred ninety".