2006143 has 4 divisors (see below), whose sum is σ = 2025000. Its totient is φ = 1987288.

The previous prime is 2006141. The next prime is 2006159. The reversal of 2006143 is 3416002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2006143 - 2¹ = 2006141 is a prime.

It is a Duffinian number.

2006143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9268 + ... + 9481.

It is an arithmetic number, because the mean of its divisors is an integer number (506250).

2^2006143 is an apocalyptic number.

2006143 is a deficient number, since it is larger than the sum of its proper divisors (18857).

2006143 is a wasteful number, since it uses less digits than its factorization.

2006143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18856.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2006143 is about 1416.3837756766. The cubic root of 2006143 is about 126.1209680619.

The spelling of 2006143 in words is "two million, six thousand, one hundred forty-three".