159436042 has 4 divisors (see below), whose sum is σ = 239154066. Its totient is φ = 79718020.

The previous prime is 159436037. The next prime is 159436051. The reversal of 159436042 is 240634951.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 153487321 + 5948721 = 12389^2 + 2439^2 .

It is a junction number, because it is equal to n+sod(n) for n = 159435989 and 159436007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39859009 + ... + 39859012.

Almost surely, 2^159436042 is an apocalyptic number.

159436042 is a deficient number, since it is larger than the sum of its proper divisors (79718024).

159436042 is an equidigital number, since it uses as much as digits as its factorization.

159436042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79718023.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 159436042 is about 12626.7985649570. The cubic root of 159436042 is about 542.2449318035.

It can be divided in two parts, 1594 and 36042, that added together give a square (37636 = 194²).

The spelling of 159436042 in words is "one hundred fifty-nine million, four hundred thirty-six thousand, forty-two".