168005143 has 2 divisors, whose sum is σ = 168005144. Its totient is φ = 168005142.

The previous prime is 168005141. The next prime is 168005161. The reversal of 168005143 is 341500861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168005143 - 2¹ = 168005141 is a prime.

Together with 168005141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168005141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84002571 + 84002572.

It is an arithmetic number, because the mean of its divisors is an integer number (84002572).

Almost surely, 2^168005143 is an apocalyptic number.

168005143 is a deficient number, since it is larger than the sum of its proper divisors (1).

168005143 is an equidigital number, since it uses as much as digits as its factorization.

168005143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 168005143 is about 12961.6797908296. The cubic root of 168005143 is about 551.7904658327.

The spelling of 168005143 in words is "one hundred sixty-eight million, five thousand, one hundred forty-three".