137998123 has 8 divisors (see below), whose sum is σ = 141875888. Its totient is φ = 134128224.

The previous prime is 137998111. The next prime is 137998127. The reversal of 137998123 is 321899731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137998123 - 2¹³ = 137989931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137998123.

It is not an unprimeable number, because it can be changed into a prime (137998127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61540 + ... + 63742.

It is an arithmetic number, because the mean of its divisors is an integer number (17734486).

Almost surely, 2^137998123 is an apocalyptic number.

137998123 is a deficient number, since it is larger than the sum of its proper divisors (3877765).

137998123 is a wasteful number, since it uses less digits than its factorization.

137998123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933.

The product of its digits is 81648, while the sum is 43.

The square root of 137998123 is about 11747.2602337737. The cubic root of 137998123 is about 516.7625823084.

The spelling of 137998123 in words is "one hundred thirty-seven million, nine hundred ninety-eight thousand, one hundred twenty-three".