242523305 has 4 divisors (see below), whose sum is σ = 291027972. Its totient is φ = 194018640.

The previous prime is 242523289. The next prime is 242523319. The reversal of 242523305 is 503325242.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31315216 + 211208089 = 5596^2 + 14533^2 .

It is not a de Polignac number, because 242523305 - 2⁴ = 242523289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24252326 + ... + 24252335.

It is an arithmetic number, because the mean of its divisors is an integer number (72756993).

Almost surely, 2^242523305 is an apocalyptic number.

It is an amenable number.

242523305 is a deficient number, since it is larger than the sum of its proper divisors (48504667).

242523305 is an equidigital number, since it uses as much as digits as its factorization.

242523305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48504666.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 242523305 is about 15573.1597628741. The cubic root of 242523305 is about 623.6168281284.

Adding to 242523305 its reverse (503325242), we get a palindrome (745848547).

The spelling of 242523305 in words is "two hundred forty-two million, five hundred twenty-three thousand, three hundred five".