159631842 has 16 divisors (see below), whose sum is σ = 321049440. Its totient is φ = 52912992.

The previous prime is 159631841. The next prime is 159631873. The reversal of 159631842 is 248136951.

It is a self number, because there is not a number n which added to its sum of digits gives 159631842.

It is not an unprimeable number, because it can be changed into a prime (159631841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73243 + ... + 75390.

It is an arithmetic number, because the mean of its divisors is an integer number (20065590).

Almost surely, 2^159631842 is an apocalyptic number.

159631842 is an abundant number, since it is smaller than the sum of its proper divisors (161417598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159631842 is a wasteful number, since it uses less digits than its factorization.

159631842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148817.

The product of its digits is 51840, while the sum is 39.

The square root of 159631842 is about 12634.5495368850. The cubic root of 159631842 is about 542.4668141408.

The spelling of 159631842 in words is "one hundred fifty-nine million, six hundred thirty-one thousand, eight hundred forty-two".