138942914 has 16 divisors (see below), whose sum is σ = 227918880. Its totient is φ = 63000960.

The previous prime is 138942911. The next prime is 138942929. The reversal of 138942914 is 419249831.

It is a super-2 number, since 2×138942914² = 38610266701622792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138942911) 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, 1682 + ... + 16754.

It is an arithmetic number, because the mean of its divisors is an integer number (14244930).

Almost surely, 2^138942914 is an apocalyptic number.

138942914 is a deficient number, since it is larger than the sum of its proper divisors (88975966).

138942914 is a wasteful number, since it uses less digits than its factorization.

138942914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15505.

The product of its digits is 62208, while the sum is 41.

The square root of 138942914 is about 11787.4048882695. The cubic root of 138942914 is about 517.9392230537.

The spelling of 138942914 in words is "one hundred thirty-eight million, nine hundred forty-two thousand, nine hundred fourteen".