159926642 has 4 divisors (see below), whose sum is σ = 239889966. Its totient is φ = 79963320.

The previous prime is 159926621. The next prime is 159926651. The reversal of 159926642 is 246629951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246629951 = 1409 ⋅175039.

It can be written as a sum of positive squares in only one way, i.e., 84254041 + 75672601 = 9179^2 + 8699^2 .

It is a junction number, because it is equal to n+sod(n) for n = 159926593 and 159926602.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 39981659 + ... + 39981662.

Almost surely, 2^159926642 is an apocalyptic number.

159926642 is a deficient number, since it is larger than the sum of its proper divisors (79963324).

159926642 is an equidigital number, since it uses as much as digits as its factorization.

159926642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79963323.

The product of its digits is 233280, while the sum is 44.

The square root of 159926642 is about 12646.2105786674. The cubic root of 159926642 is about 542.8005421993.

The spelling of 159926642 in words is "one hundred fifty-nine million, nine hundred twenty-six thousand, six hundred forty-two".