242650717 has 4 divisors (see below), whose sum is σ = 242689660. Its totient is φ = 242611776.

The previous prime is 242650711. The next prime is 242650739. The reversal of 242650717 is 717056242.

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 101183481 + 141467236 = 10059^2 + 11894^2 .

It is a 3-Lehmer number, since φ(242650717) divides (242650717-1)³.

It is a cyclic number.

It is not a de Polignac number, because 242650717 - 2¹¹ = 242648669 is a prime.

It is a super-2 number, since 2×242650717² = 117758740921228178, 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 (242650711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7788 + ... + 23365.

It is an arithmetic number, because the mean of its divisors is an integer number (60672415).

It is a Poulet number, since it divides 2^242650716-1.

Almost surely, 2^242650717 is an apocalyptic number.

242650717 is the 7789-th decagonal number.

It is an amenable number.

242650717 is a deficient number, since it is larger than the sum of its proper divisors (38943).

242650717 is an equidigital number, since it uses as much as digits as its factorization.

242650717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38942.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 242650717 is about 15577.2499819448. The cubic root of 242650717 is about 623.7260167511.

The spelling of 242650717 in words is "two hundred forty-two million, six hundred fifty thousand, seven hundred seventeen".