4045002020 has 24 divisors (see below), whose sum is σ = 8502883200. Its totient is φ = 1616404832.

The previous prime is 4045002007. The next prime is 4045002061. The reversal of 4045002020 is 202005404.

It is a self number, because there is not a number n which added to its sum of digits gives 4045002020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78860 + ... + 119619.

It is an arithmetic number, because the mean of its divisors is an integer number (354286800).

Almost surely, 2^4045002020 is an apocalyptic number.

It is an amenable number.

4045002020 is an abundant number, since it is smaller than the sum of its proper divisors (4457881180).

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

4045002020 is a wasteful number, since it uses less digits than its factorization.

4045002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199507 (or 199505 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 4045002020 is about 63600.3303450540. The cubic root of 4045002020 is about 1593.3318867926.

Adding to 4045002020 its reverse (202005404), we get a palindrome (4247007424).

The spelling of 4045002020 in words is "four billion, forty-five million, two thousand, twenty".