124868521 has 2 divisors, whose sum is σ = 124868522. Its totient is φ = 124868520.

The previous prime is 124868501. The next prime is 124868539. The reversal of 124868521 is 125868421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88736400 + 36132121 = 9420^2 + 6011^2 .

It is a cyclic number.

It is not a de Polignac number, because 124868521 - 2⁵ = 124868489 is a prime.

It is not a weakly prime, because it can be changed into another prime (124868501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62434260 + 62434261.

It is an arithmetic number, because the mean of its divisors is an integer number (62434261).

Almost surely, 2^124868521 is an apocalyptic number.

It is an amenable number.

124868521 is a deficient number, since it is larger than the sum of its proper divisors (1).

124868521 is an equidigital number, since it uses as much as digits as its factorization.

124868521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 37.

The square root of 124868521 is about 11174.4584208811. The cubic root of 124868521 is about 499.8246331668.

The spelling of 124868521 in words is "one hundred twenty-four million, eight hundred sixty-eight thousand, five hundred twenty-one".