242335591 has 4 divisors (see below), whose sum is σ = 242373400. Its totient is φ = 242297784.

The previous prime is 242335579. The next prime is 242335603. The reversal of 242335591 is 195533242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195533242 = 2 ⋅97766621.

It is an interprime number because it is at equal distance from previous prime (242335579) and next prime (242335603).

It is a cyclic number.

It is not a de Polignac number, because 242335591 - 2¹³ = 242327399 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 (242335501) 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, 6636 + ... + 22993.

It is an arithmetic number, because the mean of its divisors is an integer number (60593350).

Almost surely, 2^242335591 is an apocalyptic number.

242335591 is a deficient number, since it is larger than the sum of its proper divisors (37809).

242335591 is an equidigital number, since it uses as much as digits as its factorization.

242335591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37808.

The product of its digits is 32400, while the sum is 34.

The square root of 242335591 is about 15567.1317525098. The cubic root of 242335591 is about 623.4558926335.

The spelling of 242335591 in words is "two hundred forty-two million, three hundred thirty-five thousand, five hundred ninety-one".