2143822 has 4 divisors (see below), whose sum is σ = 3215736. Its totient is φ = 1071910.

The previous prime is 2143793. The next prime is 2143829. The reversal of 2143822 is 2283412.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2143793 and 2143802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535954 + ... + 535957.

It is an arithmetic number, because the mean of its divisors is an integer number (803934).

2^2143822 is an apocalyptic number.

2143822 is a deficient number, since it is larger than the sum of its proper divisors (1071914).

2143822 is a wasteful number, since it uses less digits than its factorization.

2143822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071913.

The product of its digits is 768, while the sum is 22.

The square root of 2143822 is about 1464.1796337881. The cubic root of 2143822 is about 128.9425459751.

The spelling of 2143822 in words is "two million, one hundred forty-three thousand, eight hundred twenty-two".