122938590 has 16 divisors (see below), whose sum is σ = 295052688. Its totient is φ = 32783616.

The previous prime is 122938589. The next prime is 122938597. The reversal of 122938590 is 95839221.

It is a super-2 number, since 2×122938590² = 30227793822376200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122938597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2048947 + ... + 2049006.

It is an arithmetic number, because the mean of its divisors is an integer number (18440793).

Almost surely, 2^122938590 is an apocalyptic number.

122938590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122938590 is an abundant number, since it is smaller than the sum of its proper divisors (172114098).

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

122938590 is a wasteful number, since it uses less digits than its factorization.

122938590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097963.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 122938590 is about 11087.7675841442. The cubic root of 122938590 is about 497.2362043491.

The spelling of 122938590 in words is "one hundred twenty-two million, nine hundred thirty-eight thousand, five hundred ninety".