168020143 has 2 divisors, whose sum is σ = 168020144. Its totient is φ = 168020142.

The previous prime is 168020131. The next prime is 168020161. The reversal of 168020143 is 341020861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168020143 - 2²⁵ = 134465711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168020183) 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 as a sum of consecutive naturals, namely, 84010071 + 84010072.

It is an arithmetic number, because the mean of its divisors is an integer number (84010072).

Almost surely, 2^168020143 is an apocalyptic number.

168020143 is a deficient number, since it is larger than the sum of its proper divisors (1).

168020143 is an equidigital number, since it uses as much as digits as its factorization.

168020143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 168020143 is about 12962.2584066204. The cubic root of 168020143 is about 551.8068871765.

The spelling of 168020143 in words is "one hundred sixty-eight million, twenty thousand, one hundred forty-three".