124081657321 has 2 divisors, whose sum is σ = 124081657322. Its totient is φ = 124081657320.

The previous prime is 124081657313. The next prime is 124081657351. The reversal of 124081657321 is 123756180421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122895819225 + 1185838096 = 350565^2 + 34436^2 .

It is a cyclic number.

It is not a de Polignac number, because 124081657321 - 2³ = 124081657313 is a prime.

It is not a weakly prime, because it can be changed into another prime (124081657351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62040828660 + 62040828661.

It is an arithmetic number, because the mean of its divisors is an integer number (62040828661).

Almost surely, 2^124081657321 is an apocalyptic number.

It is an amenable number.

124081657321 is a deficient number, since it is larger than the sum of its proper divisors (1).

124081657321 is an equidigital number, since it uses as much as digits as its factorization.

124081657321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 124081657321 in words is "one hundred twenty-four billion, eighty-one million, six hundred fifty-seven thousand, three hundred twenty-one".