138112407 has 6 divisors (see below), whose sum is σ = 199495712. Its totient is φ = 92074932.

The previous prime is 138112399. The next prime is 138112433. The reversal of 138112407 is 704211831.

It is not a de Polignac number, because 138112407 - 2³ = 138112399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138112487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7672903 + ... + 7672920.

Almost surely, 2^138112407 is an apocalyptic number.

138112407 is a deficient number, since it is larger than the sum of its proper divisors (61383305).

138112407 is a wasteful number, since it uses less digits than its factorization.

138112407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15345829 (or 15345826 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 138112407 is about 11752.1235102427. The cubic root of 138112407 is about 516.9051963242.

The spelling of 138112407 in words is "one hundred thirty-eight million, one hundred twelve thousand, four hundred seven".