124990399 has 2 divisors, whose sum is σ = 124990400. Its totient is φ = 124990398.

The previous prime is 124990391. The next prime is 124990421. The reversal of 124990399 is 993099421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124990399 - 2³ = 124990391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124990391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62495199 + 62495200.

It is an arithmetic number, because the mean of its divisors is an integer number (62495200).

Almost surely, 2^124990399 is an apocalyptic number.

124990399 is a deficient number, since it is larger than the sum of its proper divisors (1).

124990399 is an equidigital number, since it uses as much as digits as its factorization.

124990399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 124990399 is about 11179.9105094808. The cubic root of 124990399 is about 499.9871983389.

The spelling of 124990399 in words is "one hundred twenty-four million, nine hundred ninety thousand, three hundred ninety-nine".