242717 has 4 divisors (see below), whose sum is σ = 243936. Its totient is φ = 241500.

The previous prime is 242713. The next prime is 242729. The reversal of 242717 is 717242.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 242717 - 2² = 242713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242692 and 242701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242713) 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, 233 + ... + 734.

It is an arithmetic number, because the mean of its divisors is an integer number (60984).

2²⁴²⁷¹⁷ is an apocalyptic number.

It is an amenable number.

242717 is a deficient number, since it is larger than the sum of its proper divisors (1219).

242717 is an equidigital number, since it uses as much as digits as its factorization.

242717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218.

The product of its digits is 784, while the sum is 23.

The square root of 242717 is about 492.6631709393. The cubic root of 242717 is about 62.3782804368.

Adding to 242717 its reverse (717242), we get a palindrome (959959).

It can be divided in two parts, 242 and 717, that added together give a palindrome (959).

The spelling of 242717 in words is "two hundred forty-two thousand, seven hundred seventeen", and thus it is an iban number.