139715452 has 12 divisors (see below), whose sum is σ = 258884640. Its totient is φ = 65748416.

The previous prime is 139715447. The next prime is 139715453. The reversal of 139715452 is 254517931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139715453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1027252 + ... + 1027387.

It is an arithmetic number, because the mean of its divisors is an integer number (21573720).

Almost surely, 2^139715452 is an apocalyptic number.

It is an amenable number.

139715452 is a deficient number, since it is larger than the sum of its proper divisors (119169188).

139715452 is a wasteful number, since it uses less digits than its factorization.

139715452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054660 (or 2054658 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 139715452 is about 11820.1291025098. The cubic root of 139715452 is about 518.8973825775.

The spelling of 139715452 in words is "one hundred thirty-nine million, seven hundred fifteen thousand, four hundred fifty-two".