242005342309 has 2 divisors, whose sum is σ = 242005342310. Its totient is φ = 242005342308.

The previous prime is 242005342289. The next prime is 242005342333. The reversal of 242005342309 is 903243500242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225596500900 + 16408841409 = 474970^2 + 128097^2 .

It is a cyclic number.

It is not a de Polignac number, because 242005342309 - 2⁷ = 242005342181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242005342349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121002671154 + 121002671155.

It is an arithmetic number, because the mean of its divisors is an integer number (121002671155).

Almost surely, 2^242005342309 is an apocalyptic number.

It is an amenable number.

242005342309 is a deficient number, since it is larger than the sum of its proper divisors (1).

242005342309 is an equidigital number, since it uses as much as digits as its factorization.

242005342309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 242005342309 in words is "two hundred forty-two billion, five million, three hundred forty-two thousand, three hundred nine".