122390818 has 16 divisors (see below), whose sum is σ = 210817440. Its totient is φ = 52704000.

The previous prime is 122390813. The next prime is 122390819. The reversal of 122390818 is 818093221.

It is not an unprimeable number, because it can be changed into a prime (122390813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145983 + ... + 146818.

It is an arithmetic number, because the mean of its divisors is an integer number (13176090).

Almost surely, 2^122390818 is an apocalyptic number.

122390818 is a deficient number, since it is larger than the sum of its proper divisors (88426622).

122390818 is a wasteful number, since it uses less digits than its factorization.

122390818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292833.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 122390818 is about 11063.0383710805. The cubic root of 122390818 is about 496.4966003823.

The spelling of 122390818 in words is "one hundred twenty-two million, three hundred ninety thousand, eight hundred eighteen".