4020420444 has 48 divisors (see below), whose sum is σ = 10141622400. Its totient is φ = 1235290176.

The previous prime is 4020420433. The next prime is 4020420449. The reversal of 4020420444 is 4440240204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020420449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229854 + ... + 246725.

It is an arithmetic number, because the mean of its divisors is an integer number (211283800).

Almost surely, 2^4020420444 is an apocalyptic number.

It is an amenable number.

4020420444 is an abundant number, since it is smaller than the sum of its proper divisors (6121201956).

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

4020420444 is a wasteful number, since it uses less digits than its factorization.

4020420444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476642 (or 476640 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 4020420444 is about 63406.7854728498. The cubic root of 4020420444 is about 1590.0977543633.

Adding to 4020420444 its reverse (4440240204), we get a palindrome (8460660648).

The spelling of 4020420444 in words is "four billion, twenty million, four hundred twenty thousand, four hundred forty-four".