122866990 has 32 divisors (see below), whose sum is σ = 236615904. Its totient is φ = 45772800.

The previous prime is 122866967. The next prime is 122866999. The reversal of 122866990 is 99668221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122866999) 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, 12765 + ... + 20215.

It is an arithmetic number, because the mean of its divisors is an integer number (7394247).

Almost surely, 2^122866990 is an apocalyptic number.

122866990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122866990 is a deficient number, since it is larger than the sum of its proper divisors (113748914).

122866990 is a wasteful number, since it uses less digits than its factorization.

122866990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7572.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 122866990 is about 11084.5383304854. The cubic root of 122866990 is about 497.1396547193.

The spelling of 122866990 in words is "one hundred twenty-two million, eight hundred sixty-six thousand, nine hundred ninety".