242397599 has 4 divisors (see below), whose sum is σ = 245318136. Its totient is φ = 239477064.

The previous prime is 242397593. The next prime is 242397607. The reversal of 242397599 is 995793242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242397599 - 2⁴ = 242397583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242397593) 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 in 3 ways as a sum of consecutive naturals, for example, 1460144 + ... + 1460309.

It is an arithmetic number, because the mean of its divisors is an integer number (61329534).

Almost surely, 2^242397599 is an apocalyptic number.

242397599 is a deficient number, since it is larger than the sum of its proper divisors (2920537).

242397599 is an equidigital number, since it uses as much as digits as its factorization.

242397599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920536.

The product of its digits is 1224720, while the sum is 50.

The square root of 242397599 is about 15569.1232572679. The cubic root of 242397599 is about 623.5090640173.

The spelling of 242397599 in words is "two hundred forty-two million, three hundred ninety-seven thousand, five hundred ninety-nine".