125704013 has 2 divisors, whose sum is σ = 125704014. Its totient is φ = 125704012.

The previous prime is 125703997. The next prime is 125704079. The reversal of 125704013 is 310407521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88774084 + 36929929 = 9422^2 + 6077^2 .

It is an emirp because it is prime and its reverse (310407521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125704013 - 2⁴ = 125703997 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125704013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125703013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62852006 + 62852007.

It is an arithmetic number, because the mean of its divisors is an integer number (62852007).

Almost surely, 2^125704013 is an apocalyptic number.

It is an amenable number.

125704013 is a deficient number, since it is larger than the sum of its proper divisors (1).

125704013 is an equidigital number, since it uses as much as digits as its factorization.

125704013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 125704013 is about 11211.7800995203. The cubic root of 125704013 is about 500.9369272381.

The spelling of 125704013 in words is "one hundred twenty-five million, seven hundred four thousand, thirteen".