242456915317 has 2 divisors, whose sum is σ = 242456915318. Its totient is φ = 242456915316.

The previous prime is 242456915303. The next prime is 242456915321. The reversal of 242456915317 is 713519654242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209287035441 + 33169879876 = 457479^2 + 182126^2 .

It is a cyclic number.

It is not a de Polignac number, because 242456915317 - 2⁷ = 242456915189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242456915357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121228457658 + 121228457659.

It is an arithmetic number, because the mean of its divisors is an integer number (121228457659).

Almost surely, 2^242456915317 is an apocalyptic number.

It is an amenable number.

242456915317 is a deficient number, since it is larger than the sum of its proper divisors (1).

242456915317 is an equidigital number, since it uses as much as digits as its factorization.

242456915317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 49.

The spelling of 242456915317 in words is "two hundred forty-two billion, four hundred fifty-six million, nine hundred fifteen thousand, three hundred seventeen".