137878942 has 16 divisors (see below), whose sum is σ = 219399840. Its totient is φ = 64761088.

The previous prime is 137878933. The next prime is 137878981. The reversal of 137878942 is 249878731.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15783 + ... + 22909.

It is an arithmetic number, because the mean of its divisors is an integer number (13712490).

Almost surely, 2^137878942 is an apocalyptic number.

137878942 is a deficient number, since it is larger than the sum of its proper divisors (81520898).

137878942 is a wasteful number, since it uses less digits than its factorization.

137878942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7715.

The product of its digits is 677376, while the sum is 49.

The square root of 137878942 is about 11742.1864233200. The cubic root of 137878942 is about 516.6137734730.

The spelling of 137878942 in words is "one hundred thirty-seven million, eight hundred seventy-eight thousand, nine hundred forty-two".