242317 has 4 divisors (see below), whose sum is σ = 243936. Its totient is φ = 240700.

The previous prime is 242309. The next prime is 242329. The reversal of 242317 is 713242.

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 an emirpimes, since its reverse is a distinct semiprime: 713242 = 2 ⋅356621.

It is a cyclic number.

It is not a de Polignac number, because 242317 - 2³ = 242309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242294 and 242303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242357) 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, 559 + ... + 892.

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

2²⁴²³¹⁷ is an apocalyptic number.

It is an amenable number.

242317 is a deficient number, since it is larger than the sum of its proper divisors (1619).

242317 is a wasteful number, since it uses less digits than its factorization.

242317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618.

The product of its digits is 336, while the sum is 19.

The square root of 242317 is about 492.2570466738. The cubic root of 242317 is about 62.3439949226.

Adding to 242317 its reverse (713242), we get a palindrome (955559).

The spelling of 242317 in words is "two hundred forty-two thousand, three hundred seventeen", and thus it is an iban number.