138568422 has 16 divisors (see below), whose sum is σ = 289186560. Its totient is φ = 44181192.

The previous prime is 138568373. The next prime is 138568433. The reversal of 138568422 is 224865831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501922 + ... + 502197.

It is an arithmetic number, because the mean of its divisors is an integer number (18074160).

Almost surely, 2^138568422 is an apocalyptic number.

138568422 is an abundant number, since it is smaller than the sum of its proper divisors (150618138).

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

138568422 is a wasteful number, since it uses less digits than its factorization.

138568422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004147.

The product of its digits is 92160, while the sum is 39.

The square root of 138568422 is about 11771.5089092265. The cubic root of 138568422 is about 517.4734715333.

The spelling of 138568422 in words is "one hundred thirty-eight million, five hundred sixty-eight thousand, four hundred twenty-two".