158642 has 8 divisors (see below), whose sum is σ = 259632. Its totient is φ = 72100.

The previous prime is 158633. The next prime is 158647. The reversal of 158642 is 246851.

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

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (158647) 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, 3584 + ... + 3627.

It is an arithmetic number, because the mean of its divisors is an integer number (32454).

2¹⁵⁸⁶⁴² is an apocalyptic number.

158642 is a deficient number, since it is larger than the sum of its proper divisors (100990).

158642 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 158642 = (261548)₉.

158642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224.

The product of its digits is 1920, while the sum is 26.

The square root of 158642 is about 398.2988827501. The cubic root of 158642 is about 54.1343249405.

Subtracting 158642 from its reverse (246851), we obtain a square (88209 = 297²).

The spelling of 158642 in words is "one hundred fifty-eight thousand, six hundred forty-two".