158542 has 8 divisors (see below), whose sum is σ = 251856. Its totient is φ = 74592.

The previous prime is 158537. The next prime is 158551. The reversal of 158542 is 245851.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2298 + ... + 2365.

It is an arithmetic number, because the mean of its divisors is an integer number (31482).

2¹⁵⁸⁵⁴² is an apocalyptic number.

158542 is a deficient number, since it is larger than the sum of its proper divisors (93314).

158542 is a wasteful number, since it uses less digits than its factorization.

158542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4682.

The product of its digits is 1600, while the sum is 25.

The square root of 158542 is about 398.1733290917. The cubic root of 158542 is about 54.1229480241.

The spelling of 158542 in words is "one hundred fifty-eight thousand, five hundred forty-two".