242542322489 has 2 divisors, whose sum is σ = 242542322490. Its totient is φ = 242542322488.

The previous prime is 242542322443. The next prime is 242542322563. The reversal of 242542322489 is 984223245242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237792769600 + 4749552889 = 487640^2 + 68917^2 .

It is a cyclic number.

It is not a de Polignac number, because 242542322489 - 2³² = 238247355193 is a prime.

It is not a weakly prime, because it can be changed into another prime (242542322419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121271161244 + 121271161245.

It is an arithmetic number, because the mean of its divisors is an integer number (121271161245).

Almost surely, 2^242542322489 is an apocalyptic number.

It is an amenable number.

242542322489 is a deficient number, since it is larger than the sum of its proper divisors (1).

242542322489 is an equidigital number, since it uses as much as digits as its factorization.

242542322489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2211840, while the sum is 47.

The spelling of 242542322489 in words is "two hundred forty-two billion, five hundred forty-two million, three hundred twenty-two thousand, four hundred eighty-nine".