12757139 has 2 divisors, whose sum is σ = 12757140. Its totient is φ = 12757138.

The previous prime is 12757133. The next prime is 12757177. The reversal of 12757139 is 93175721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12757139 - 2⁸ = 12756883 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12757099 and 12757108.

It is not a weakly prime, because it can be changed into another prime (12757133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6378569 + 6378570.

It is an arithmetic number, because the mean of its divisors is an integer number (6378570).

Almost surely, 2^12757139 is an apocalyptic number.

12757139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12757139 is an equidigital number, since it uses as much as digits as its factorization.

12757139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 35.

The square root of 12757139 is about 3571.7137343298. The cubic root of 12757139 is about 233.6600305762.

The spelling of 12757139 in words is "twelve million, seven hundred fifty-seven thousand, one hundred thirty-nine".