42258 has 8 divisors (see below), whose sum is σ = 84528. Its totient is φ = 14084.

The previous prime is 42257. The next prime is 42281. The reversal of 42258 is 85224.

It is a sphenic number, since it is the product of 3 distinct primes.

42258 is an admirable number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (42257) 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, 3516 + ... + 3527.

It is an arithmetic number, because the mean of its divisors is an integer number (10566).

2⁴²²⁵⁸ is an apocalyptic number.

42258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42264).

42258 is a wasteful number, since it uses less digits than its factorization.

42258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7048.

The product of its digits is 640, while the sum is 21.

The square root of 42258 is about 205.5675071601. The cubic root of 42258 is about 34.8312969870.

It can be divided in two parts, 42 and 258, that added together give a triangular number (300 = T₂₄).

The spelling of 42258 in words is "forty-two thousand, two hundred fifty-eight".