2194043 has 4 divisors (see below), whose sum is σ = 2216760. Its totient is φ = 2171328.

The previous prime is 2194021. The next prime is 2194051. The reversal of 2194043 is 3404912.

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 2194043 - 2⁶ = 2193979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2194013) 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 3 ways as a sum of consecutive naturals, for example, 11213 + ... + 11406.

It is an arithmetic number, because the mean of its divisors is an integer number (554190).

2^2194043 is an apocalyptic number.

2194043 is a deficient number, since it is larger than the sum of its proper divisors (22717).

2194043 is an equidigital number, since it uses as much as digits as its factorization.

2194043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22716.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2194043 is about 1481.2302319356. The cubic root of 2194043 is about 129.9416503427.

Adding to 2194043 its reverse (3404912), we get a palindrome (5598955).

The spelling of 2194043 in words is "two million, one hundred ninety-four thousand, forty-three".