139356023 has 8 divisors (see below), whose sum is σ = 143274288. Its totient is φ = 135445824.

The previous prime is 139356001. The next prime is 139356029. The reversal of 139356023 is 320653931.

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 139356023 - 2⁶ = 139355959 is a prime.

It is a super-2 number, since 2×139356023² = 38840202292753058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139356029) 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, 55115 + ... + 57587.

It is an arithmetic number, because the mean of its divisors is an integer number (17909286).

Almost surely, 2^139356023 is an apocalyptic number.

139356023 is a deficient number, since it is larger than the sum of its proper divisors (3918265).

139356023 is a wasteful number, since it uses less digits than its factorization.

139356023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 139356023 is about 11804.9152051169. The cubic root of 139356023 is about 518.4520323363.

The spelling of 139356023 in words is "one hundred thirty-nine million, three hundred fifty-six thousand, twenty-three".