124995257 has 2 divisors, whose sum is σ = 124995258. Its totient is φ = 124995256.

The previous prime is 124995251. The next prime is 124995259. The reversal of 124995257 is 752599421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110334016 + 14661241 = 10504^2 + 3829^2 .

It is a cyclic number.

It is not a de Polignac number, because 124995257 - 2⁸ = 124995001 is a prime.

Together with 124995259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124995251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62497628 + 62497629.

It is an arithmetic number, because the mean of its divisors is an integer number (62497629).

Almost surely, 2^124995257 is an apocalyptic number.

It is an amenable number.

124995257 is a deficient number, since it is larger than the sum of its proper divisors (1).

124995257 is an equidigital number, since it uses as much as digits as its factorization.

124995257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 124995257 is about 11180.1277720785. The cubic root of 124995257 is about 499.9936759200.

The spelling of 124995257 in words is "one hundred twenty-four million, nine hundred ninety-five thousand, two hundred fifty-seven".