242534231 has 4 divisors (see below), whose sum is σ = 246510264. Its totient is φ = 238558200.

The previous prime is 242534219. The next prime is 242534239. The reversal of 242534231 is 132435242.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242534231 is a prime.

It is a super-2 number, since 2×242534231² = 117645706413522722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242534231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242534239) 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, 1987925 + ... + 1988046.

It is an arithmetic number, because the mean of its divisors is an integer number (61627566).

Almost surely, 2^242534231 is an apocalyptic number.

242534231 is a deficient number, since it is larger than the sum of its proper divisors (3976033).

242534231 is an equidigital number, since it uses as much as digits as its factorization.

242534231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976032.

The product of its digits is 5760, while the sum is 26.

The square root of 242534231 is about 15573.5105547850. The cubic root of 242534231 is about 623.6261929124.

Adding to 242534231 its reverse (132435242), we get a palindrome (374969473).

The spelling of 242534231 in words is "two hundred forty-two million, five hundred thirty-four thousand, two hundred thirty-one".