159120856 has 8 divisors (see below), whose sum is σ = 298351620. Its totient is φ = 79560424.

The previous prime is 159120851. The next prime is 159120859. The reversal of 159120856 is 658021951.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159120851) by changing a digit.

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 as a sum of consecutive naturals, namely, 9945046 + ... + 9945061.

Almost surely, 2^159120856 is an apocalyptic number.

It is an amenable number.

159120856 is a deficient number, since it is larger than the sum of its proper divisors (139230764).

159120856 is a wasteful number, since it uses less digits than its factorization.

159120856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19890113 (or 19890109 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 159120856 is about 12614.3115547381. The cubic root of 159120856 is about 541.8873782785.

The spelling of 159120856 in words is "one hundred fifty-nine million, one hundred twenty thousand, eight hundred fifty-six".