20043143 has 8 divisors (see below), whose sum is σ = 21590016. Its totient is φ = 18552600.

The previous prime is 20043083. The next prime is 20043151. The reversal of 20043143 is 34134002.

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 20043143 - 2¹⁴ = 20026759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043343) 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 7 ways as a sum of consecutive naturals, for example, 13343 + ... + 14768.

It is an arithmetic number, because the mean of its divisors is an integer number (2698752).

Almost surely, 2^20043143 is an apocalyptic number.

20043143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20043143 is a deficient number, since it is larger than the sum of its proper divisors (1546873).

20043143 is a wasteful number, since it uses less digits than its factorization.

20043143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28165.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20043143 is about 4476.9568905675. The cubic root of 20043143 is about 271.6368016818.

Adding to 20043143 its reverse (34134002), we get a palindrome (54177145).

The spelling of 20043143 in words is "twenty million, forty-three thousand, one hundred forty-three".