159942 has 32 divisors (see below), whose sum is σ = 357120. Its totient is φ = 47520.

The previous prime is 159937. The next prime is 159977. The reversal of 159942 is 249951.

It is a happy number.

Its product of digits (3240) is a multiple of the sum of its prime divisors (108).

It is a congruent number.

It is an unprimeable number.

159942 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 15 ways as a sum of consecutive naturals, for example, 2592 + ... + 2652.

It is an arithmetic number, because the mean of its divisors is an integer number (11160).

2¹⁵⁹⁹⁴² is an apocalyptic number.

159942 is an abundant number, since it is smaller than the sum of its proper divisors (197178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159942 is a wasteful number, since it uses less digits than its factorization.

159942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108.

The product of its digits is 3240, while the sum is 30.

The square root of 159942 is about 399.9274934285. The cubic root of 159942 is about 54.2817916965.

Subtracting 159942 from its reverse (249951), we obtain a palindrome (90009).

The spelling of 159942 in words is "one hundred fifty-nine thousand, nine hundred forty-two".