242857017 has 24 divisors (see below), whose sum is σ = 378979328. Its totient is φ = 148975200.

The previous prime is 242856989. The next prime is 242857051. The reversal of 242857017 is 710758242.

It is a de Polignac number, because none of the positive numbers 2^k-242857017 is a prime.

It is a super-2 number, since 2×242857017² = 117959061412276578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242857067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35592 + ... + 41862.

Almost surely, 2^242857017 is an apocalyptic number.

It is an amenable number.

242857017 is a deficient number, since it is larger than the sum of its proper divisors (136122311).

242857017 is a wasteful number, since it uses less digits than its factorization.

242857017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6621 (or 6618 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 242857017 is about 15583.8704114222. The cubic root of 242857017 is about 623.9027292290.

The spelling of 242857017 in words is "two hundred forty-two million, eight hundred fifty-seven thousand, seventeen".