12718139 has 8 divisors (see below), whose sum is σ = 14557440. Its totient is φ = 10884456.

The previous prime is 12718093. The next prime is 12718157. The reversal of 12718139 is 93181721.

12718139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12718139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12714139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6242 + ... + 8024.

It is an arithmetic number, because the mean of its divisors is an integer number (1819680).

Almost surely, 2^12718139 is an apocalyptic number.

12718139 is a deficient number, since it is larger than the sum of its proper divisors (1839301).

12718139 is a wasteful number, since it uses less digits than its factorization.

12718139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809.

The product of its digits is 3024, while the sum is 32.

The square root of 12718139 is about 3566.2499912373. The cubic root of 12718139 is about 233.4216792442.

The spelling of 12718139 in words is "twelve million, seven hundred eighteen thousand, one hundred thirty-nine".