4021204020 has 48 divisors (see below), whose sum is σ = 11362686720. Its totient is φ = 1062481536.

The previous prime is 4021204007. The next prime is 4021204037. The reversal of 4021204020 is 204021204.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 300892 + ... + 313971.

It is an arithmetic number, because the mean of its divisors is an integer number (236722640).

Almost surely, 2^4021204020 is an apocalyptic number.

It is an amenable number.

4021204020 is an abundant number, since it is smaller than the sum of its proper divisors (7341482700).

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

4021204020 is a wasteful number, since it uses less digits than its factorization.

4021204020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614984 (or 614982 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4021204020 is about 63412.9641319502. The cubic root of 4021204020 is about 1590.2010504835.

Adding to 4021204020 its reverse (204021204), we get a palindrome (4225225224).

The spelling of 4021204020 in words is "four billion, twenty-one million, two hundred four thousand, twenty".