258442 has 4 divisors (see below), whose sum is σ = 387666. Its totient is φ = 129220.

The previous prime is 258437. The next prime is 258443. The reversal of 258442 is 244852.

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., 239121 + 19321 = 489^2 + 139^2 .

It is not an unprimeable number, because it can be changed into a prime (258443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64609 + ... + 64612.

2²⁵⁸⁴⁴² is an apocalyptic number.

258442 is a deficient number, since it is larger than the sum of its proper divisors (129224).

258442 is a wasteful number, since it uses less digits than its factorization.

258442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129223.

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

The square root of 258442 is about 508.3719111045. The cubic root of 258442 is about 63.6973010595.

The spelling of 258442 in words is "two hundred fifty-eight thousand, four hundred forty-two".