159143021 has 8 divisors (see below), whose sum is σ = 161676288. Its totient is φ = 156618000.

The previous prime is 159143009. The next prime is 159143027. The reversal of 159143021 is 120341951.

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

It is a cyclic number.

It is not a de Polignac number, because 159143021 - 2¹⁴ = 159126637 is a prime.

It is a super-2 number, since 2×159143021² = 50653002266012882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159143027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45236 + ... + 48626.

It is an arithmetic number, because the mean of its divisors is an integer number (20209536).

Almost surely, 2^159143021 is an apocalyptic number.

It is an amenable number.

159143021 is a deficient number, since it is larger than the sum of its proper divisors (2533267).

159143021 is an equidigital number, since it uses as much as digits as its factorization.

159143021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 159143021 is about 12615.1900897291. The cubic root of 159143021 is about 541.9125381400.

Adding to 159143021 its reverse (120341951), we get a palindrome (279484972).

The spelling of 159143021 in words is "one hundred fifty-nine million, one hundred forty-three thousand, twenty-one".