137860123 has 4 divisors (see below), whose sum is σ = 145969560. Its totient is φ = 129750688.

The previous prime is 137860117. The next prime is 137860127. The reversal of 137860123 is 321068731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321068731 = 719 ⋅446549.

It is a cyclic number.

It is not a de Polignac number, because 137860123 - 2¹⁷ = 137729051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137860127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4054693 + ... + 4054726.

It is an arithmetic number, because the mean of its divisors is an integer number (36492390).

Almost surely, 2^137860123 is an apocalyptic number.

137860123 is a deficient number, since it is larger than the sum of its proper divisors (8109437).

137860123 is an equidigital number, since it uses as much as digits as its factorization.

137860123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109436.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 137860123 is about 11741.3850545836. The cubic root of 137860123 is about 516.5902683198.

The spelling of 137860123 in words is "one hundred thirty-seven million, eight hundred sixty thousand, one hundred twenty-three".