122755138 has 16 divisors (see below), whose sum is σ = 201289536. Its totient is φ = 55681840.

The previous prime is 122755123. The next prime is 122755207. The reversal of 122755138 is 831557221.

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, 5520 + ... + 16612.

It is an arithmetic number, because the mean of its divisors is an integer number (12580596).

Almost surely, 2^122755138 is an apocalyptic number.

122755138 is a deficient number, since it is larger than the sum of its proper divisors (78534398).

122755138 is a wasteful number, since it uses less digits than its factorization.

122755138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11609.

The product of its digits is 16800, while the sum is 34.

The square root of 122755138 is about 11079.4917753478. The cubic root of 122755138 is about 496.9887518422.

It can be divided in two parts, 1227 and 55138, that added together give a palindrome (56365).

The spelling of 122755138 in words is "one hundred twenty-two million, seven hundred fifty-five thousand, one hundred thirty-eight".