242316517 has 4 divisors (see below), whose sum is σ = 242565516. Its totient is φ = 242067520.

The previous prime is 242316511. The next prime is 242316533. The reversal of 242316517 is 715613242.

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 220047556 + 22268961 = 14834^2 + 4719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242316517 is a prime.

It is a super-2 number, since 2×242316517² = 117434588822022578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242316511) 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, 123034 + ... + 124987.

It is an arithmetic number, because the mean of its divisors is an integer number (60641379).

Almost surely, 2^242316517 is an apocalyptic number.

It is an amenable number.

242316517 is a deficient number, since it is larger than the sum of its proper divisors (248999).

242316517 is an equidigital number, since it uses as much as digits as its factorization.

242316517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248998.

The product of its digits is 10080, while the sum is 31.

The square root of 242316517 is about 15566.5191035119. The cubic root of 242316517 is about 623.4395350009.

Adding to 242316517 its reverse (715613242), we get a palindrome (957929759).

The spelling of 242316517 in words is "two hundred forty-two million, three hundred sixteen thousand, five hundred seventeen".