3139942172 has 12 divisors (see below), whose sum is σ = 5684378280. Its totient is φ = 1515834096.

The previous prime is 3139942171. The next prime is 3139942189. The reversal of 3139942172 is 2712499313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3139942171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13534118 + ... + 13534349.

It is an arithmetic number, because the mean of its divisors is an integer number (473698190).

Almost surely, 2^3139942172 is an apocalyptic number.

It is an amenable number.

3139942172 is a deficient number, since it is larger than the sum of its proper divisors (2544436108).

3139942172 is a wasteful number, since it uses less digits than its factorization.

3139942172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27068500 (or 27068498 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 3139942172 is about 56035.1869096553. The cubic root of 3139942172 is about 1464.3353610525.

The spelling of 3139942172 in words is "three billion, one hundred thirty-nine million, nine hundred forty-two thousand, one hundred seventy-two".