159042820 has 24 divisors (see below), whose sum is σ = 353637144. Its totient is φ = 59874816.

The previous prime is 159042817. The next prime is 159042823. The reversal of 159042820 is 28240951.

159042820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (159042817) and next prime (159042823).

It can be written as a sum of positive squares in 4 ways, for example, as 26378496 + 132664324 = 5136^2 + 11518^2 .

It is not an unprimeable number, because it can be changed into a prime (159042823) 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, 233547 + ... + 234226.

It is an arithmetic number, because the mean of its divisors is an integer number (14734881).

Almost surely, 2^159042820 is an apocalyptic number.

159042820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159042820 is an abundant number, since it is smaller than the sum of its proper divisors (194594324).

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

159042820 is a wasteful number, since it uses less digits than its factorization.

159042820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467799 (or 467797 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 159042820 is about 12611.2180220627. The cubic root of 159042820 is about 541.7987797144.

The spelling of 159042820 in words is "one hundred fifty-nine million, forty-two thousand, eight hundred twenty".