159971040 has 72 divisors (see below), whose sum is σ = 545906088. Its totient is φ = 42658560.

The previous prime is 159971039. The next prime is 159971041. The reversal of 159971040 is 40179951.

It is an interprime number because it is at equal distance from previous prime (159971039) and next prime (159971041).

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 159970986 and 159971004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159971041) 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 11 ways as a sum of consecutive naturals, for example, 54106 + ... + 56985.

It is an arithmetic number, because the mean of its divisors is an integer number (7582029).

Almost surely, 2^159971040 is an apocalyptic number.

159971040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159971040 is an abundant number, since it is smaller than the sum of its proper divisors (385935048).

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

159971040 is a wasteful number, since it uses less digits than its factorization.

159971040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111112 (or 111101 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 159971040 is about 12647.9658443562. The cubic root of 159971040 is about 542.8507673701.

The spelling of 159971040 in words is "one hundred fifty-nine million, nine hundred seventy-one thousand, forty".