124255013 has 2 divisors, whose sum is σ = 124255014. Its totient is φ = 124255012.

The previous prime is 124255009. The next prime is 124255093. The reversal of 124255013 is 310552421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67207204 + 57047809 = 8198^2 + 7553^2 .

It is an emirp because it is prime and its reverse (310552421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124255013 - 2² = 124255009 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 124255013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124255093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62127506 + 62127507.

It is an arithmetic number, because the mean of its divisors is an integer number (62127507).

Almost surely, 2^124255013 is an apocalyptic number.

It is an amenable number.

124255013 is a deficient number, since it is larger than the sum of its proper divisors (1).

124255013 is an equidigital number, since it uses as much as digits as its factorization.

124255013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 124255013 is about 11146.9732663176. The cubic root of 124255013 is about 499.0047040867.

The spelling of 124255013 in words is "one hundred twenty-four million, two hundred fifty-five thousand, thirteen".