43018 has 8 divisors (see below), whose sum is σ = 65412. Its totient is φ = 21216.

The previous prime is 43013. The next prime is 43019. The reversal of 43018 is 81034.

It can be written as a sum of positive squares in 2 ways, for example, as 42849 + 169 = 207^2 + 13^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 42992 and 43010.

It is not an unprimeable number, because it can be changed into a prime (43013) by changing a digit.

43018 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196 + ... + 352.

2⁴³⁰¹⁸ is an apocalyptic number.

43018 is a deficient number, since it is larger than the sum of its proper divisors (22394).

43018 is a wasteful number, since it uses less digits than its factorization.

43018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 43018 is about 207.4078108462. The cubic root of 43018 is about 35.0388683843.

Adding to 43018 its sum of digits (16), we get a palindrome (43034).

The spelling of 43018 in words is "forty-three thousand, eighteen".