102742333517321 has 2 divisors, whose sum is σ = 102742333517322. Its totient is φ = 102742333517320.

The previous prime is 102742333517281. The next prime is 102742333517357. The reversal of 102742333517321 is 123715333247201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56285840707321 + 46456492810000 = 7502389^2 + 6815900^2 .

It is a cyclic number.

It is not a de Polignac number, because 102742333517321 - 2⁴⁶ = 32373589339657 is a prime.

It is not a weakly prime, because it can be changed into another prime (102742333517521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51371166758660 + 51371166758661.

It is an arithmetic number, because the mean of its divisors is an integer number (51371166758661).

Almost surely, 2^{102742333517321} is an apocalyptic number.

It is an amenable number.

102742333517321 is a deficient number, since it is larger than the sum of its proper divisors (1).

102742333517321 is an equidigital number, since it uses as much as digits as its factorization.

102742333517321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 102742333517321 in words is "one hundred two trillion, seven hundred forty-two billion, three hundred thirty-three million, five hundred seventeen thousand, three hundred twenty-one".