159242 has 4 divisors (see below), whose sum is σ = 238866. Its totient is φ = 79620.

The previous prime is 159233. The next prime is 159287. The reversal of 159242 is 242951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242951 = 127 ⋅1913.

It can be written as a sum of positive squares in only one way, i.e., 151321 + 7921 = 389^2 + 89^2 .

It is a super-4 number, since 4×159242⁴ (a number of 22 digits) contains 4444 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 159242.

It is an unprimeable number.

159242 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 as a sum of consecutive naturals, namely, 39809 + ... + 39812.

2¹⁵⁹²⁴² is an apocalyptic number.

159242 is a deficient number, since it is larger than the sum of its proper divisors (79624).

159242 is an equidigital number, since it uses as much as digits as its factorization.

159242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79623.

The product of its digits is 720, while the sum is 23.

The square root of 159242 is about 399.0513751386. The cubic root of 159242 is about 54.2024862355.

The spelling of 159242 in words is "one hundred fifty-nine thousand, two hundred forty-two".