242591199 has 4 divisors (see below), whose sum is σ = 323454936. Its totient is φ = 161727464.

The previous prime is 242591197. The next prime is 242591227. The reversal of 242591199 is 991195242.

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 242591199 - 2¹ = 242591197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242591199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242591197) 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, 40431864 + ... + 40431869.

It is an arithmetic number, because the mean of its divisors is an integer number (80863734).

Almost surely, 2^242591199 is an apocalyptic number.

242591199 is a deficient number, since it is larger than the sum of its proper divisors (80863737).

242591199 is an equidigital number, since it uses as much as digits as its factorization.

242591199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80863736.

The product of its digits is 58320, while the sum is 42.

The square root of 242591199 is about 15575.3394505545. The cubic root of 242591199 is about 623.6750162003.

The spelling of 242591199 in words is "two hundred forty-two million, five hundred ninety-one thousand, one hundred ninety-nine".