138092321420 has 24 divisors (see below), whose sum is σ = 290042953200. Its totient is φ = 55227580352.

The previous prime is 138092321399. The next prime is 138092321449. The reversal of 138092321420 is 24123290831.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462515 + ... + 700074.

It is an arithmetic number, because the mean of its divisors is an integer number (12085123050).

Almost surely, 2^138092321420 is an apocalyptic number.

138092321420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138092321420 is an abundant number, since it is smaller than the sum of its proper divisors (151950631780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138092321420 is a wasteful number, since it uses less digits than its factorization.

138092321420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168537 (or 1168535 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 138092321420 in words is "one hundred thirty-eight billion, ninety-two million, three hundred twenty-one thousand, four hundred twenty".