139133975 has 12 divisors (see below), whose sum is σ = 173293224. Its totient is φ = 110812320.

The previous prime is 139133971. The next prime is 139133989. The reversal of 139133975 is 579331931.

It is not a de Polignac number, because 139133975 - 2² = 139133971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139133971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6584 + ... + 17933.

It is an arithmetic number, because the mean of its divisors is an integer number (14441102).

Almost surely, 2^139133975 is an apocalyptic number.

139133975 is a deficient number, since it is larger than the sum of its proper divisors (34159249).

139133975 is a wasteful number, since it uses less digits than its factorization.

139133975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24754 (or 24749 counting only the distinct ones).

The product of its digits is 76545, while the sum is 41.

The square root of 139133975 is about 11795.5065597031. The cubic root of 139133975 is about 518.1765211365.

The spelling of 139133975 in words is "one hundred thirty-nine million, one hundred thirty-three thousand, nine hundred seventy-five".