138942696 has 32 divisors (see below), whose sum is σ = 356747040. Its totient is φ = 45062208.

The previous prime is 138942677. The next prime is 138942697. The reversal of 138942696 is 696249831.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (138942697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77346 + ... + 79121.

It is an arithmetic number, because the mean of its divisors is an integer number (11148345).

Almost surely, 2^138942696 is an apocalyptic number.

It is an amenable number.

138942696 is an abundant number, since it is smaller than the sum of its proper divisors (217804344).

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

138942696 is a wasteful number, since it uses less digits than its factorization.

138942696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156513 (or 156509 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 138942696 is about 11787.3956411075. The cubic root of 138942696 is about 517.9389521731.

The spelling of 138942696 in words is "one hundred thirty-eight million, nine hundred forty-two thousand, six hundred ninety-six".