242620717 has 4 divisors (see below), whose sum is σ = 243976320. Its totient is φ = 241265116.

The previous prime is 242620667. The next prime is 242620727. The reversal of 242620717 is 717026242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 242620717 - 2¹⁹ = 242096429 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 (242620727) 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, 677533 + ... + 677890.

It is an arithmetic number, because the mean of its divisors is an integer number (60994080).

Almost surely, 2^242620717 is an apocalyptic number.

It is an amenable number.

242620717 is a deficient number, since it is larger than the sum of its proper divisors (1355603).

242620717 is a wasteful number, since it uses less digits than its factorization.

242620717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355602.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 242620717 is about 15576.2870094256. The cubic root of 242620717 is about 623.7003110071.

Adding to 242620717 its reverse (717026242), we get a palindrome (959646959).

The spelling of 242620717 in words is "two hundred forty-two million, six hundred twenty thousand, seven hundred seventeen".