158242 has 16 divisors (see below), whose sum is σ = 276480. Its totient is φ = 66528.

The previous prime is 158233. The next prime is 158243. The reversal of 158242 is 242851.

It is not an unprimeable number, because it can be changed into a prime (158243) by changing a digit.

158242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183 + ... + 1309.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2¹⁵⁸²⁴² is an apocalyptic number.

158242 is a deficient number, since it is larger than the sum of its proper divisors (118238).

158242 is a wasteful number, since it uses less digits than its factorization.

158242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

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

The square root of 158242 is about 397.7964303510. The cubic root of 158242 is about 54.0887885446.

It can be divided in two parts, 158 and 242, that added together give a square (400 = 20²).

The spelling of 158242 in words is "one hundred fifty-eight thousand, two hundred forty-two".