242304239 has 2 divisors, whose sum is σ = 242304240. Its totient is φ = 242304238.

The previous prime is 242304221. The next prime is 242304253. The reversal of 242304239 is 932403242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242304239 is a prime.

It is a super-2 number, since 2×242304239² = 117422688474738242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242304259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121152119 + 121152120.

It is an arithmetic number, because the mean of its divisors is an integer number (121152120).

Almost surely, 2^242304239 is an apocalyptic number.

242304239 is a deficient number, since it is larger than the sum of its proper divisors (1).

242304239 is an equidigital number, since it uses as much as digits as its factorization.

242304239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 242304239 is about 15566.1247264693. The cubic root of 242304239 is about 623.4290050819.

The spelling of 242304239 in words is "two hundred forty-two million, three hundred four thousand, two hundred thirty-nine".