22404143 has 2 divisors, whose sum is σ = 22404144. Its totient is φ = 22404142.

The previous prime is 22404131. The next prime is 22404149. The reversal of 22404143 is 34140422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22404143 - 2¹⁶ = 22338607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22404149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202071 + 11202072.

It is an arithmetic number, because the mean of its divisors is an integer number (11202072).

Almost surely, 2^22404143 is an apocalyptic number.

22404143 is a deficient number, since it is larger than the sum of its proper divisors (1).

22404143 is an equidigital number, since it uses as much as digits as its factorization.

22404143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22404143 is about 4733.3014905032. The cubic root of 22404143 is about 281.9093273533.

Adding to 22404143 its reverse (34140422), we get a palindrome (56544565).

The spelling of 22404143 in words is "twenty-two million, four hundred four thousand, one hundred forty-three".