138122604 has 48 divisors (see below), whose sum is σ = 366841440. Its totient is φ = 44916480.

The previous prime is 138122597. The next prime is 138122627. The reversal of 138122604 is 406221831.

138122604 is a `hidden beast` number, since 1 + 38 + 1 + 22 + 604 = 666.

138122604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11169 + ... + 20024.

It is an arithmetic number, because the mean of its divisors is an integer number (7642530).

Almost surely, 2^138122604 is an apocalyptic number.

It is an amenable number.

138122604 is an abundant number, since it is smaller than the sum of its proper divisors (228718836).

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

138122604 is a wasteful number, since it uses less digits than its factorization.

138122604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31247 (or 31239 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 138122604 is about 11752.5573387242. The cubic root of 138122604 is about 516.9179172488.

The spelling of 138122604 in words is "one hundred thirty-eight million, one hundred twenty-two thousand, six hundred four".