124887857 has 2 divisors, whose sum is σ = 124887858. Its totient is φ = 124887856.

The previous prime is 124887827. The next prime is 124887869. The reversal of 124887857 is 758788421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110019121 + 14868736 = 10489^2 + 3856^2 .

It is a cyclic number.

It is not a de Polignac number, because 124887857 - 2¹² = 124883761 is a prime.

It is a super-4 number, since 4×124887857⁴ (a number of 33 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124887827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62443928 + 62443929.

It is an arithmetic number, because the mean of its divisors is an integer number (62443929).

Almost surely, 2^124887857 is an apocalyptic number.

It is an amenable number.

124887857 is a deficient number, since it is larger than the sum of its proper divisors (1).

124887857 is an equidigital number, since it uses as much as digits as its factorization.

124887857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1003520, while the sum is 50.

The square root of 124887857 is about 11175.3235747338. The cubic root of 124887857 is about 499.8504312628.

The spelling of 124887857 in words is "one hundred twenty-four million, eight hundred eighty-seven thousand, eight hundred fifty-seven".