124591387321 has 2 divisors, whose sum is σ = 124591387322. Its totient is φ = 124591387320.

The previous prime is 124591387313. The next prime is 124591387331. The reversal of 124591387321 is 123783195421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83789407296 + 40801980025 = 289464^2 + 201995^2 .

It is a cyclic number.

It is not a de Polignac number, because 124591387321 - 2³ = 124591387313 is a prime.

It is not a weakly prime, because it can be changed into another prime (124591387331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62295693660 + 62295693661.

It is an arithmetic number, because the mean of its divisors is an integer number (62295693661).

Almost surely, 2^124591387321 is an apocalyptic number.

It is an amenable number.

124591387321 is a deficient number, since it is larger than the sum of its proper divisors (1).

124591387321 is an equidigital number, since it uses as much as digits as its factorization.

124591387321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The spelling of 124591387321 in words is "one hundred twenty-four billion, five hundred ninety-one million, three hundred eighty-seven thousand, three hundred twenty-one".