2109143 has 4 divisors (see below), whose sum is σ = 2114448. Its totient is φ = 2103840.

The previous prime is 2109127. The next prime is 2109161. The reversal of 2109143 is 3419012.

2109143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2109143 - 2⁴ = 2109127 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 (2109103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003 + ... + 2868.

It is an arithmetic number, because the mean of its divisors is an integer number (528612).

2^2109143 is an apocalyptic number.

2109143 is a deficient number, since it is larger than the sum of its proper divisors (5305).

2109143 is an equidigital number, since it uses as much as digits as its factorization.

2109143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5304.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2109143 is about 1452.2888831083. The cubic root of 2109143 is about 128.2434940278.

The spelling of 2109143 in words is "two million, one hundred nine thousand, one hundred forty-three".