4020535205 has 16 divisors (see below), whose sum is σ = 4999261680. Its totient is φ = 3100382208.

The previous prime is 4020535199. The next prime is 4020535219. The reversal of 4020535205 is 5025350204.

It can be written as a sum of positive squares in 8 ways, for example, as 48636676 + 3971898529 = 6974^2 + 63023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020535205 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66269 + ... + 111501.

It is an arithmetic number, because the mean of its divisors is an integer number (312453855).

Almost surely, 2^4020535205 is an apocalyptic number.

It is an amenable number.

4020535205 is a deficient number, since it is larger than the sum of its proper divisors (978726475).

4020535205 is a wasteful number, since it uses less digits than its factorization.

4020535205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45880.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 4020535205 is about 63407.6904247426. The cubic root of 4020535205 is about 1590.1128837488.

Adding to 4020535205 its reverse (5025350204), we get a palindrome (9045885409).

The spelling of 4020535205 in words is "four billion, twenty million, five hundred thirty-five thousand, two hundred five".