242304612509 has 2 divisors, whose sum is σ = 242304612510. Its totient is φ = 242304612508.

The previous prime is 242304612467. The next prime is 242304612691. The reversal of 242304612509 is 905216403242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230378880484 + 11925732025 = 479978^2 + 109205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242304612509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242304617509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121152306254 + 121152306255.

It is an arithmetic number, because the mean of its divisors is an integer number (121152306255).

Almost surely, 2^242304612509 is an apocalyptic number.

It is an amenable number.

242304612509 is a deficient number, since it is larger than the sum of its proper divisors (1).

242304612509 is an equidigital number, since it uses as much as digits as its factorization.

242304612509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 242304612509 in words is "two hundred forty-two billion, three hundred four million, six hundred twelve thousand, five hundred nine".