124403304721 has 2 divisors, whose sum is σ = 124403304722. Its totient is φ = 124403304720.

The previous prime is 124403304679. The next prime is 124403304733. The reversal of 124403304721 is 127403304421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123559983121 + 843321600 = 351511^2 + 29040^2 .

It is a cyclic number.

It is not a de Polignac number, because 124403304721 - 2⁹ = 124403304209 is a prime.

It is not a weakly prime, because it can be changed into another prime (124403301721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62201652360 + 62201652361.

It is an arithmetic number, because the mean of its divisors is an integer number (62201652361).

Almost surely, 2^124403304721 is an apocalyptic number.

It is an amenable number.

124403304721 is a deficient number, since it is larger than the sum of its proper divisors (1).

124403304721 is an equidigital number, since it uses as much as digits as its factorization.

124403304721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

The spelling of 124403304721 in words is "one hundred twenty-four billion, four hundred three million, three hundred four thousand, seven hundred twenty-one".