137238975 has 24 divisors (see below), whose sum is σ = 252114320. Its totient is φ = 73193760.

The previous prime is 137238971. The next prime is 137239001. The reversal of 137238975 is 579832731.

It is a happy number.

It is not a de Polignac number, because 137238975 - 2² = 137238971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 137238975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137238971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100984 + ... + 102333.

Almost surely, 2^137238975 is an apocalyptic number.

137238975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

137238975 is a deficient number, since it is larger than the sum of its proper divisors (114875345).

137238975 is a wasteful number, since it uses less digits than its factorization.

137238975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203336 (or 203325 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 137238975 is about 11714.9039688766. The cubic root of 137238975 is about 515.8132436646.

The spelling of 137238975 in words is "one hundred thirty-seven million, two hundred thirty-eight thousand, nine hundred seventy-five".