242265026405239 has 2 divisors, whose sum is σ = 242265026405240. Its totient is φ = 242265026405238.

The previous prime is 242265026405221. The next prime is 242265026405267. The reversal of 242265026405239 is 932504620562242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242265026405239 is a prime.

It is a super-2 number, since 2×242265026405239² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242265026405539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121132513202619 + 121132513202620.

It is an arithmetic number, because the mean of its divisors is an integer number (121132513202620).

Almost surely, 2^{242265026405239} is an apocalyptic number.

242265026405239 is a deficient number, since it is larger than the sum of its proper divisors (1).

242265026405239 is an equidigital number, since it uses as much as digits as its factorization.

242265026405239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12441600, while the sum is 52.

The spelling of 242265026405239 in words is "two hundred forty-two trillion, two hundred sixty-five billion, twenty-six million, four hundred five thousand, two hundred thirty-nine".