20416043 has 2 divisors, whose sum is σ = 20416044. Its totient is φ = 20416042.

The previous prime is 20416021. The next prime is 20416057. The reversal of 20416043 is 34061402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20416043 - 2¹⁸ = 20153899 is a prime.

It is not a weakly prime, because it can be changed into another prime (20416063) 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, 10208021 + 10208022.

It is an arithmetic number, because the mean of its divisors is an integer number (10208022).

Almost surely, 2^20416043 is an apocalyptic number.

20416043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20416043 is an equidigital number, since it uses as much as digits as its factorization.

20416043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20416043 is about 4518.4115571736. The cubic root of 20416043 is about 273.3110499714.

Adding to 20416043 its reverse (34061402), we get a palindrome (54477445).

The spelling of 20416043 in words is "twenty million, four hundred sixteen thousand, forty-three".