159243235 has 4 divisors (see below), whose sum is σ = 191091888. Its totient is φ = 127394584.

The previous prime is 159243229. The next prime is 159243247. The reversal of 159243235 is 532342951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 532342951 = 7 ⋅76048993.

It is a cyclic number.

It is not a de Polignac number, because 159243235 - 2¹⁹ = 158718947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159243235.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15924319 + ... + 15924328.

It is an arithmetic number, because the mean of its divisors is an integer number (47772972).

Almost surely, 2^159243235 is an apocalyptic number.

159243235 is a deficient number, since it is larger than the sum of its proper divisors (31848653).

159243235 is an equidigital number, since it uses as much as digits as its factorization.

159243235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31848652.

The product of its digits is 32400, while the sum is 34.

The square root of 159243235 is about 12619.1614222182. The cubic root of 159243235 is about 542.0262635749.

The spelling of 159243235 in words is "one hundred fifty-nine million, two hundred forty-three thousand, two hundred thirty-five".