139173423 has 8 divisors (see below), whose sum is σ = 195331200. Its totient is φ = 87898968.

The previous prime is 139173401. The next prime is 139173443. The reversal of 139173423 is 324371931.

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

It is not a de Polignac number, because 139173423 - 2⁹ = 139172911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139173443) 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, 1220763 + ... + 1220876.

It is an arithmetic number, because the mean of its divisors is an integer number (24416400).

Almost surely, 2^139173423 is an apocalyptic number.

139173423 is a deficient number, since it is larger than the sum of its proper divisors (56157777).

139173423 is a wasteful number, since it uses less digits than its factorization.

139173423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441661.

The product of its digits is 13608, while the sum is 33.

The square root of 139173423 is about 11797.1786033780. The cubic root of 139173423 is about 518.2254885577.

The spelling of 139173423 in words is "one hundred thirty-nine million, one hundred seventy-three thousand, four hundred twenty-three".