124412857 has 2 divisors, whose sum is σ = 124412858. Its totient is φ = 124412856.

The previous prime is 124412839. The next prime is 124412861. The reversal of 124412857 is 758214421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104530176 + 19882681 = 10224^2 + 4459^2 .

It is an emirp because it is prime and its reverse (758214421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124412857 is a prime.

It is not a weakly prime, because it can be changed into another prime (124412357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62206428 + 62206429.

It is an arithmetic number, because the mean of its divisors is an integer number (62206429).

Almost surely, 2^124412857 is an apocalyptic number.

It is an amenable number.

124412857 is a deficient number, since it is larger than the sum of its proper divisors (1).

124412857 is an equidigital number, since it uses as much as digits as its factorization.

124412857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 34.

The square root of 124412857 is about 11154.0511474531. The cubic root of 124412857 is about 499.2159137268.

The spelling of 124412857 in words is "one hundred twenty-four million, four hundred twelve thousand, eight hundred fifty-seven".