242530243 has 4 divisors (see below), whose sum is σ = 242603208. Its totient is φ = 242457280.

The previous prime is 242530229. The next prime is 242530247. The reversal of 242530243 is 342035242.

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-242530243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242530247) 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, 31246 + ... + 38227.

It is an arithmetic number, because the mean of its divisors is an integer number (60650802).

Almost surely, 2^242530243 is an apocalyptic number.

242530243 is a deficient number, since it is larger than the sum of its proper divisors (72965).

242530243 is an equidigital number, since it uses as much as digits as its factorization.

242530243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72964.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 242530243 is about 15573.3825163322. The cubic root of 242530243 is about 623.6227747903.

Adding to 242530243 its reverse (342035242), we get a palindrome (584565485).

The spelling of 242530243 in words is "two hundred forty-two million, five hundred thirty thousand, two hundred forty-three".