242332309 has 4 divisors (see below), whose sum is σ = 242555116. Its totient is φ = 242109504.

The previous prime is 242332291. The next prime is 242332339. The reversal of 242332309 is 903233242.

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 208947025 + 33385284 = 14455^2 + 5778^2 .

It is a cyclic number.

It is not a de Polignac number, because 242332309 - 2²¹ = 240235157 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 (242332339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109764 + ... + 111949.

It is an arithmetic number, because the mean of its divisors is an integer number (60638779).

Almost surely, 2^242332309 is an apocalyptic number.

It is an amenable number.

242332309 is a deficient number, since it is larger than the sum of its proper divisors (222807).

242332309 is a wasteful number, since it uses less digits than its factorization.

242332309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222806.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 242332309 is about 15567.0263377435. The cubic root of 242332309 is about 623.4530780910.

The spelling of 242332309 in words is "two hundred forty-two million, three hundred thirty-two thousand, three hundred nine".