242717865 has 32 divisors (see below), whose sum is σ = 419126400. Its totient is φ = 119233536.

The previous prime is 242717861. The next prime is 242717903. The reversal of 242717865 is 568717242.

It is not a de Polignac number, because 242717865 - 2² = 242717861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242717861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114586 + ... + 116684.

It is an arithmetic number, because the mean of its divisors is an integer number (13097700).

Almost surely, 2^242717865 is an apocalyptic number.

It is an amenable number.

242717865 is a deficient number, since it is larger than the sum of its proper divisors (176408535).

242717865 is a wasteful number, since it uses less digits than its factorization.

242717865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713.

The product of its digits is 188160, while the sum is 42.

The square root of 242717865 is about 15579.4051555250. The cubic root of 242717865 is about 623.7835453838.

The spelling of 242717865 in words is "two hundred forty-two million, seven hundred seventeen thousand, eight hundred sixty-five".