242188799 has 4 divisors (see below), whose sum is σ = 245254560. Its totient is φ = 239123040.

The previous prime is 242188759. The next prime is 242188811. The reversal of 242188799 is 997881242.

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 242188799 - 2¹⁶ = 242123263 is a prime.

It is a super-2 number, since 2×242188799² = 117310828722124802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242188759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532762 + ... + 1532919.

It is an arithmetic number, because the mean of its divisors is an integer number (61313640).

Almost surely, 2^242188799 is an apocalyptic number.

242188799 is a deficient number, since it is larger than the sum of its proper divisors (3065761).

242188799 is an equidigital number, since it uses as much as digits as its factorization.

242188799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065760.

The product of its digits is 580608, while the sum is 50.

The square root of 242188799 is about 15562.4162327063. The cubic root of 242188799 is about 623.3299834594.

The spelling of 242188799 in words is "two hundred forty-two million, one hundred eighty-eight thousand, seven hundred ninety-nine".