242718135137297 has 2 divisors, whose sum is σ = 242718135137298. Its totient is φ = 242718135137296.

The previous prime is 242718135137161. The next prime is 242718135137311. The reversal of 242718135137297 is 792731531817242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204458083645456 + 38260051491841 = 14298884^2 + 6185471^2 .

It is a cyclic number.

It is not a de Polignac number, because 242718135137297 - 2⁸ = 242718135137041 is a prime.

It is not a weakly prime, because it can be changed into another prime (242718135037297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121359067568648 + 121359067568649.

It is an arithmetic number, because the mean of its divisors is an integer number (121359067568649).

Almost surely, 2^{242718135137297} is an apocalyptic number.

It is an amenable number.

242718135137297 is a deficient number, since it is larger than the sum of its proper divisors (1).

242718135137297 is an equidigital number, since it uses as much as digits as its factorization.

242718135137297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 62.

The spelling of 242718135137297 in words is "two hundred forty-two trillion, seven hundred eighteen billion, one hundred thirty-five million, one hundred thirty-seven thousand, two hundred ninety-seven".