137973123 has 6 divisors (see below), whose sum is σ = 199294524. Its totient is φ = 91982076.

The previous prime is 137973109. The next prime is 137973127. The reversal of 137973123 is 321379731.

It is not a de Polignac number, because 137973123 - 2²⁶ = 70864259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137973127) 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, 7665165 + ... + 7665182.

It is an arithmetic number, because the mean of its divisors is an integer number (33215754).

Almost surely, 2^137973123 is an apocalyptic number.

137973123 is a deficient number, since it is larger than the sum of its proper divisors (61321401).

137973123 is a wasteful number, since it uses less digits than its factorization.

137973123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15330353 (or 15330350 counting only the distinct ones).

The product of its digits is 23814, while the sum is 36.

The square root of 137973123 is about 11746.1961076767. The cubic root of 137973123 is about 516.7313745294.

The spelling of 137973123 in words is "one hundred thirty-seven million, nine hundred seventy-three thousand, one hundred twenty-three".