43020 has 36 divisors (see below), whose sum is σ = 131040. Its totient is φ = 11424.

The previous prime is 43019. The next prime is 43037. The reversal of 43020 is 2034.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 6 and base 15.

It is a junction number, because it is equal to n+sod(n) for n = 42993 and 43011.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 43020.

It is an unprimeable 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 11 ways as a sum of consecutive naturals, for example, 61 + ... + 299.

It is an arithmetic number, because the mean of its divisors is an integer number (3640).

2⁴³⁰²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65520).

43020 is an abundant number, since it is smaller than the sum of its proper divisors (88020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43020 is a wasteful number, since it uses less digits than its factorization.

43020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 43020 is about 207.4126322093. The cubic root of 43020 is about 35.0394113869.

Adding to 43020 its reverse (2034), we get a palindrome (45054).

The spelling of 43020 in words is "forty-three thousand, twenty", and thus it is an iban number.