242817 has 8 divisors (see below), whose sum is σ = 335040. Its totient is φ = 156240.

The previous prime is 242813. The next prime is 242819. The reversal of 242817 is 718242.

242817 = 34² + 35² + ... + 91².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242817 - 2² = 242813 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 242817.

It is not an unprimeable number, because it can be changed into a prime (242813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309 + ... + 1482.

It is an arithmetic number, because the mean of its divisors is an integer number (41880).

2²⁴²⁸¹⁷ is an apocalyptic number.

It is an amenable number.

242817 is a deficient number, since it is larger than the sum of its proper divisors (92223).

242817 is a wasteful number, since it uses less digits than its factorization.

242817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823.

The product of its digits is 896, while the sum is 24.

The square root of 242817 is about 492.7646497061. The cubic root of 242817 is about 62.3868459288.

The spelling of 242817 in words is "two hundred forty-two thousand, eight hundred seventeen".