159571642 has 8 divisors (see below), whose sum is σ = 239592276. Its totient is φ = 79707552.

The previous prime is 159571637. The next prime is 159571661. The reversal of 159571642 is 246175951.

It can be written as a sum of positive squares in 2 ways, for example, as 158533281 + 1038361 = 12591^2 + 1019^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 159571595 and 159571604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36553 + ... + 40684.

Almost surely, 2^159571642 is an apocalyptic number.

159571642 is a deficient number, since it is larger than the sum of its proper divisors (80020634).

159571642 is a wasteful number, since it uses less digits than its factorization.

159571642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78272.

The product of its digits is 75600, while the sum is 40.

The square root of 159571642 is about 12632.1669558314. The cubic root of 159571642 is about 542.3986142800.

It can be divided in two parts, 1595 and 71642, that added together give a palindrome (73237).

The spelling of 159571642 in words is "one hundred fifty-nine million, five hundred seventy-one thousand, six hundred forty-two".