It is a strong prime.
It is a cyclic number.
It is a Sophie Germain prime.
It is a self number, because there is not a number n which added to its sum of digits gives 100043.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 100043.
2100043 is an apocalyptic number.
100043 is an equidigital number, since it uses as much as digits as its factorization.
100043 is an odious number, because the sum of its binary digits is odd.
The square root of 100043 is about 316.2957476793. The cubic root of 100043 is about 46.4225403268.
Adding to 100043 its reverse (340001), we get a palindrome (440044).
The spelling of 100043 in words is "one hundred thousand, forty-three", and thus it is an iban number.