2109543 has 8 divisors (see below), whose sum is σ = 2840448. Its totient is φ = 1392504.

The previous prime is 2109533. The next prime is 2109553. The reversal of 2109543 is 3459012.

It is an interprime number because it is at equal distance from previous prime (2109533) and next prime (2109553).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2109543 - 2⁸ = 2109287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3105 + ... + 3722.

It is an arithmetic number, because the mean of its divisors is an integer number (355056).

2^2109543 is an apocalyptic number.

2109543 is a deficient number, since it is larger than the sum of its proper divisors (730905).

2109543 is a wasteful number, since it uses less digits than its factorization.

2109543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6933.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2109543 is about 1452.4265902275. The cubic root of 2109543 is about 128.2516006625.

The spelling of 2109543 in words is "two million, one hundred nine thousand, five hundred forty-three".