16000043 has 4 divisors (see below), whose sum is σ = 16941240. Its totient is φ = 15058848.

The previous prime is 15999989. The next prime is 16000057. The reversal of 16000043 is 34000061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16000043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15999991 and 16000027.

It is not an unprimeable number, because it can be changed into a prime (16005043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470573 + ... + 470606.

It is an arithmetic number, because the mean of its divisors is an integer number (4235310).

Almost surely, 2^16000043 is an apocalyptic number.

16000043 is a deficient number, since it is larger than the sum of its proper divisors (941197).

16000043 is an equidigital number, since it uses as much as digits as its factorization.

16000043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941196.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 16000043 is about 4000.0053749964. The cubic root of 16000043 is about 251.9844357146.

The spelling of 16000043 in words is "sixteen million, forty-three", and thus it is an aban number and an uban number.