158442 has 8 divisors (see below), whose sum is σ = 316896. Its totient is φ = 52812.

The previous prime is 158429. The next prime is 158443. The reversal of 158442 is 244851.

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

158442 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 158442.

It is not an unprimeable number, because it can be changed into a prime (158443) by changing a digit.

158442 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13198 + ... + 13209.

It is an arithmetic number, because the mean of its divisors is an integer number (39612).

2¹⁵⁸⁴⁴² is an apocalyptic number.

158442 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.

158442 is a wasteful number, since it uses less digits than its factorization.

158442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26412.

The product of its digits is 1280, while the sum is 24.

The square root of 158442 is about 398.0477358308. The cubic root of 158442 is about 54.1115663226. Note that the first 3 decimals are identical.

The spelling of 158442 in words is "one hundred fifty-eight thousand, four hundred forty-two".