2122543 has 4 divisors (see below), whose sum is σ = 2126488. Its totient is φ = 2118600.

The previous prime is 2122531. The next prime is 2122553. The reversal of 2122543 is 3452212.

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 2122543 - 2⁵ = 2122511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2122543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122513) 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, 1008 + ... + 2293.

It is an arithmetic number, because the mean of its divisors is an integer number (531622).

2^2122543 is an apocalyptic number.

2122543 is a deficient number, since it is larger than the sum of its proper divisors (3945).

2122543 is an equidigital number, since it uses as much as digits as its factorization.

2122543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944.

The product of its digits is 480, while the sum is 19.

The square root of 2122543 is about 1456.8949859204. The cubic root of 2122543 is about 128.5145103147.

Adding to 2122543 its reverse (3452212), we get a palindrome (5574755).

The spelling of 2122543 in words is "two million, one hundred twenty-two thousand, five hundred forty-three".