20104043 has 2 divisors, whose sum is σ = 20104044. Its totient is φ = 20104042.

The previous prime is 20104031. The next prime is 20104067. The reversal of 20104043 is 34040102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20104043 is a prime.

It is not a weakly prime, because it can be changed into another prime (20104003) 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 as a sum of consecutive naturals, namely, 10052021 + 10052022.

It is an arithmetic number, because the mean of its divisors is an integer number (10052022).

Almost surely, 2^20104043 is an apocalyptic number.

20104043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104043 is an equidigital number, since it uses as much as digits as its factorization.

20104043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20104043 is about 4483.7532269294. The cubic root of 20104043 is about 271.9116413908.

Adding to 20104043 its reverse (34040102), we get a palindrome (54144145).

The spelling of 20104043 in words is "twenty million, one hundred four thousand, forty-three".