124341939857 has 2 divisors, whose sum is σ = 124341939858. Its totient is φ = 124341939856.

The previous prime is 124341939809. The next prime is 124341940007. The reversal of 124341939857 is 758939143421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64211053201 + 60130886656 = 253399^2 + 245216^2 .

It is a cyclic number.

It is not a de Polignac number, because 124341939857 - 2¹² = 124341935761 is a prime.

It is not a weakly prime, because it can be changed into another prime (124341939157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62170969928 + 62170969929.

It is an arithmetic number, because the mean of its divisors is an integer number (62170969929).

Almost surely, 2^124341939857 is an apocalyptic number.

It is an amenable number.

124341939857 is a deficient number, since it is larger than the sum of its proper divisors (1).

124341939857 is an equidigital number, since it uses as much as digits as its factorization.

124341939857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 56.

The spelling of 124341939857 in words is "one hundred twenty-four billion, three hundred forty-one million, nine hundred thirty-nine thousand, eight hundred fifty-seven".