137504923 has 4 divisors (see below), whose sum is σ = 137555440. Its totient is φ = 137454408.

The previous prime is 137504909. The next prime is 137504929. The reversal of 137504923 is 329405731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137504923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137504929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20928 + ... + 26701.

It is an arithmetic number, because the mean of its divisors is an integer number (34388860).

Almost surely, 2^137504923 is an apocalyptic number.

137504923 is a deficient number, since it is larger than the sum of its proper divisors (50517).

137504923 is an equidigital number, since it uses as much as digits as its factorization.

137504923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50516.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 137504923 is about 11726.2493151050. The cubic root of 137504923 is about 516.1462175516.

The spelling of 137504923 in words is "one hundred thirty-seven million, five hundred four thousand, nine hundred twenty-three".