159442243 has 4 divisors (see below), whose sum is σ = 167833960. Its totient is φ = 151050528.

The previous prime is 159442229. The next prime is 159442267. The reversal of 159442243 is 342244951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342244951 = 73 ⋅4688287.

It is a cyclic number.

It is not a de Polignac number, because 159442243 - 2⁵ = 159442211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159442199 and 159442208.

It is not an unprimeable number, because it can be changed into a prime (159442223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4195830 + ... + 4195867.

It is an arithmetic number, because the mean of its divisors is an integer number (41958490).

Almost surely, 2^159442243 is an apocalyptic number.

159442243 is a deficient number, since it is larger than the sum of its proper divisors (8391717).

159442243 is an equidigital number, since it uses as much as digits as its factorization.

159442243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8391716.

The product of its digits is 34560, while the sum is 34.

The square root of 159442243 is about 12627.0441117468. The cubic root of 159442243 is about 542.2519616177.

The spelling of 159442243 in words is "one hundred fifty-nine million, four hundred forty-two thousand, two hundred forty-three".