124541364721 has 2 divisors, whose sum is σ = 124541364722. Its totient is φ = 124541364720.

The previous prime is 124541364707. The next prime is 124541364803. The reversal of 124541364721 is 127463145421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65802510400 + 58738854321 = 256520^2 + 242361^2 .

It is a cyclic number.

It is not a de Polignac number, because 124541364721 - 2⁷ = 124541364593 is a prime.

It is not a weakly prime, because it can be changed into another prime (124541364221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62270682360 + 62270682361.

It is an arithmetic number, because the mean of its divisors is an integer number (62270682361).

Almost surely, 2^124541364721 is an apocalyptic number.

It is an amenable number.

124541364721 is a deficient number, since it is larger than the sum of its proper divisors (1).

124541364721 is an equidigital number, since it uses as much as digits as its factorization.

124541364721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The spelling of 124541364721 in words is "one hundred twenty-four billion, five hundred forty-one million, three hundred sixty-four thousand, seven hundred twenty-one".