122457938 has 16 divisors (see below), whose sum is σ = 191244120. Its totient is φ = 58755456.

The previous prime is 122457917. The next prime is 122457943. The reversal of 122457938 is 839754221.

It can be written as a sum of positive squares in 4 ways, for example, as 118744609 + 3713329 = 10897^2 + 1927^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122457895 and 122457904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5933 + ... + 16736.

Almost surely, 2^122457938 is an apocalyptic number.

122457938 is a deficient number, since it is larger than the sum of its proper divisors (68786182).

122457938 is a wasteful number, since it uses less digits than its factorization.

122457938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22781.

The product of its digits is 120960, while the sum is 41.

The square root of 122457938 is about 11066.0714799788. The cubic root of 122457938 is about 496.5873445584.

The spelling of 122457938 in words is "one hundred twenty-two million, four hundred fifty-seven thousand, nine hundred thirty-eight".