139102475 has 24 divisors (see below), whose sum is σ = 176841360. Its totient is φ = 108501120.

The previous prime is 139102441. The next prime is 139102493. The reversal of 139102475 is 574201931.

It is a de Polignac number, because none of the positive numbers 2^k-139102475 is a prime.

It is a super-4 number, since 4×139102475⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 366836 + ... + 367214.

It is an arithmetic number, because the mean of its divisors is an integer number (7368390).

Almost surely, 2^139102475 is an apocalyptic number.

139102475 is a deficient number, since it is larger than the sum of its proper divisors (37738885).

139102475 is a wasteful number, since it uses less digits than its factorization.

139102475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 139102475 is about 11794.1712298915. The cubic root of 139102475 is about 518.1374130457.

The spelling of 139102475 in words is "one hundred thirty-nine million, one hundred two thousand, four hundred seventy-five".