159922421 has 4 divisors (see below), whose sum is σ = 159950592. Its totient is φ = 159894252.

The previous prime is 159922403. The next prime is 159922423. The reversal of 159922421 is 124229951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159922421 is a prime.

It is a super-5 number, since 5×159922421⁵ (a number of 42 digits) contains 55555 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 (159922423) 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 3 ways as a sum of consecutive naturals, for example, 2261 + ... + 18026.

It is an arithmetic number, because the mean of its divisors is an integer number (39987648).

Almost surely, 2^159922421 is an apocalyptic number.

It is an amenable number.

159922421 is a deficient number, since it is larger than the sum of its proper divisors (28171).

159922421 is an equidigital number, since it uses as much as digits as its factorization.

159922421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28170.

The product of its digits is 12960, while the sum is 35.

The square root of 159922421 is about 12646.0436896288. The cubic root of 159922421 is about 542.7957667155.

The spelling of 159922421 in words is "one hundred fifty-nine million, nine hundred twenty-two thousand, four hundred twenty-one".