12708139 has 2 divisors, whose sum is σ = 12708140. Its totient is φ = 12708138.

The previous prime is 12708127. The next prime is 12708149. The reversal of 12708139 is 93180721.

12708139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12708139 - 2⁵ = 12708107 is a prime.

It is a super-2 number, since 2×12708139² = 322993593686642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12708139.

It is not a weakly prime, because it can be changed into another prime (12708149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6354069 + 6354070.

It is an arithmetic number, because the mean of its divisors is an integer number (6354070).

Almost surely, 2^12708139 is an apocalyptic number.

12708139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12708139 is an equidigital number, since it uses as much as digits as its factorization.

12708139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12708139 is about 3564.8476825806. The cubic root of 12708139 is about 233.3604850490.

It can be divided in two parts, 1270 and 8139, that added together give a square (9409 = 97²).

The spelling of 12708139 in words is "twelve million, seven hundred eight thousand, one hundred thirty-nine".