4021443020 has 48 divisors (see below), whose sum is σ = 9655544640. Its totient is φ = 1378197504.

The previous prime is 4021443001. The next prime is 4021443047. The reversal of 4021443020 is 203441204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4021442983 and 4021443001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445916 + ... + 454844.

It is an arithmetic number, because the mean of its divisors is an integer number (201157180).

Almost surely, 2^4021443020 is an apocalyptic number.

It is an amenable number.

4021443020 is an abundant number, since it is smaller than the sum of its proper divisors (5634101620).

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

4021443020 is a wasteful number, since it uses less digits than its factorization.

4021443020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12162 (or 12160 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4021443020 is about 63414.8485766543. The cubic root of 4021443020 is about 1590.2325543582.

Adding to 4021443020 its reverse (203441204), we get a palindrome (4224884224).

The spelling of 4021443020 in words is "four billion, twenty-one million, four hundred forty-three thousand, twenty".