138864126 has 32 divisors (see below), whose sum is σ = 296071200. Its totient is φ = 43268096.

The previous prime is 138864113. The next prime is 138864137. The reversal of 138864126 is 621468831.

It is a congruent number.

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, 10630 + ... + 19766.

It is an arithmetic number, because the mean of its divisors is an integer number (9252225).

Almost surely, 2^138864126 is an apocalyptic number.

138864126 is an abundant number, since it is smaller than the sum of its proper divisors (157207074).

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

138864126 is a wasteful number, since it uses less digits than its factorization.

138864126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9308.

The product of its digits is 55296, while the sum is 39.

The square root of 138864126 is about 11784.0623725437. The cubic root of 138864126 is about 517.8413048750.

The spelling of 138864126 in words is "one hundred thirty-eight million, eight hundred sixty-four thousand, one hundred twenty-six".