242497 has 4 divisors (see below), whose sum is σ = 255280. Its totient is φ = 229716.

The previous prime is 242491. The next prime is 242509. The reversal of 242497 is 794242.

242497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242497 is a prime.

It is a Duffinian number.

242497 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (242491) 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, 6363 + ... + 6400.

It is an arithmetic number, because the mean of its divisors is an integer number (63820).

2²⁴²⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

242497 is a deficient number, since it is larger than the sum of its proper divisors (12783).

242497 is a wasteful number, since it uses less digits than its factorization.

242497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12782.

The product of its digits is 4032, while the sum is 28.

The square root of 242497 is about 492.4398440419. The cubic root of 242497 is about 62.3594280696.

The spelling of 242497 in words is "two hundred forty-two thousand, four hundred ninety-seven".