242458 has 4 divisors (see below), whose sum is σ = 363690. Its totient is φ = 121228.

The previous prime is 242453. The next prime is 242467. The reversal of 242458 is 854242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 205209 + 37249 = 453^2 + 193^2 .

It is not an unprimeable number, because it can be changed into a prime (242453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60613 + ... + 60616.

2²⁴²⁴⁵⁸ is an apocalyptic number.

242458 is a deficient number, since it is larger than the sum of its proper divisors (121232).

242458 is a wasteful number, since it uses less digits than its factorization.

242458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121231.

The product of its digits is 2560, while the sum is 25.

The square root of 242458 is about 492.4002437042. The cubic root of 242458 is about 62.3560848693.

The spelling of 242458 in words is "two hundred forty-two thousand, four hundred fifty-eight".