199975043 has 2 divisors, whose sum is σ = 199975044. Its totient is φ = 199975042.

The previous prime is 199975033. The next prime is 199975067. The reversal of 199975043 is 340579991.

199975043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (340579991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199975043 - 2⁸ = 199974787 is a prime.

It is not a weakly prime, because it can be changed into another prime (199975033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99987521 + 99987522.

It is an arithmetic number, because the mean of its divisors is an integer number (99987522).

Almost surely, 2^199975043 is an apocalyptic number.

199975043 is a deficient number, since it is larger than the sum of its proper divisors (1).

199975043 is an equidigital number, since it uses as much as digits as its factorization.

199975043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 199975043 is about 14141.2532330059. The cubic root of 199975043 is about 584.7792217271.

The spelling of 199975043 in words is "one hundred ninety-nine million, nine hundred seventy-five thousand, forty-three".