258142 has 8 divisors (see below), whose sum is σ = 389376. Its totient is φ = 128352.

The previous prime is 258131. The next prime is 258143. The reversal of 258142 is 241852.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483 + ... + 865.

It is an arithmetic number, because the mean of its divisors is an integer number (48672).

2²⁵⁸¹⁴² is an apocalyptic number.

258142 is a deficient number, since it is larger than the sum of its proper divisors (131234).

258142 is a wasteful number, since it uses less digits than its factorization.

258142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its digits is 640, while the sum is 22.

The square root of 258142 is about 508.0767658534. The cubic root of 258142 is about 63.6726448644.

Adding to 258142 its reverse (241852), we get a palindrome (499994).

Subtracting from 258142 its reverse (241852), we obtain a triangular number (16290 = T₁₈₀).

It can be divided in two parts, 258 and 142, that added together give a square (400 = 20²).

The spelling of 258142 in words is "two hundred fifty-eight thousand, one hundred forty-two".