16004043 has 24 divisors (see below), whose sum is σ = 25421760. Its totient is φ = 9621360.

The previous prime is 16003997. The next prime is 16004047. The reversal of 16004043 is 34040061.

It is not a de Polignac number, because 16004043 - 2⁸ = 16003787 is a prime.

It is a super-2 number, since 2×16004043² = 512258784691698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16004047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13180 + ... + 14342.

It is an arithmetic number, because the mean of its divisors is an integer number (1059240).

Almost surely, 2^16004043 is an apocalyptic number.

16004043 is a deficient number, since it is larger than the sum of its proper divisors (9417717).

16004043 is a wasteful number, since it uses less digits than its factorization.

16004043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 16004043 is about 4000.5053430785. The cubic root of 16004043 is about 252.0054326115.

The spelling of 16004043 in words is "sixteen million, four thousand, forty-three".