43006 has 4 divisors (see below), whose sum is σ = 64512. Its totient is φ = 21502.

The previous prime is 43003. The next prime is 43013. The reversal of 43006 is 60034.

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

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10750 + ... + 10753.

It is an arithmetic number, because the mean of its divisors is an integer number (16128).

2⁴³⁰⁰⁶ is an apocalyptic number.

43006 is a deficient number, since it is larger than the sum of its proper divisors (21506).

43006 is a wasteful number, since it uses less digits than its factorization.

43006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21505.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 43006 is about 207.3788803133. The cubic root of 43006 is about 35.0356100156.

The spelling of 43006 in words is "forty-three thousand, six".