242317609 has 8 divisors (see below), whose sum is σ = 256822920. Its totient is φ = 227840256.

The previous prime is 242317597. The next prime is 242317613. The reversal of 242317609 is 906713242.

It can be written as a sum of positive squares in 4 ways, for example, as 1447209 + 240870400 = 1203^2 + 15520^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242317609 - 2⁵ = 242317577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242317619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12427 + ... + 25279.

It is an arithmetic number, because the mean of its divisors is an integer number (32102865).

Almost surely, 2^242317609 is an apocalyptic number.

It is an amenable number.

242317609 is a deficient number, since it is larger than the sum of its proper divisors (14505311).

242317609 is a wasteful number, since it uses less digits than its factorization.

242317609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13979.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 242317609 is about 15566.5541787513. The cubic root of 242317609 is about 623.4404715101.

The spelling of 242317609 in words is "two hundred forty-two million, three hundred seventeen thousand, six hundred nine".