4020330205 has 4 divisors (see below), whose sum is σ = 4824396252. Its totient is φ = 3216264160.

The previous prime is 4020330203. The next prime is 4020330229. The reversal of 4020330205 is 5020330204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2389058884 + 1631271321 = 48878^2 + 40389^2 .

It is not a de Polignac number, because 4020330205 - 2¹ = 4020330203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020330203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402033016 + ... + 402033025.

It is an arithmetic number, because the mean of its divisors is an integer number (1206099063).

Almost surely, 2^4020330205 is an apocalyptic number.

It is an amenable number.

4020330205 is a deficient number, since it is larger than the sum of its proper divisors (804066047).

4020330205 is an equidigital number, since it uses as much as digits as its factorization.

4020330205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804066046.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 4020330205 is about 63406.0738809777. The cubic root of 4020330205 is about 1590.0858576055.

Adding to 4020330205 its reverse (5020330204), we get a palindrome (9040660409).

Subtracting 4020330205 from its reverse (5020330204), we obtain a palindrome (999999999).

The spelling of 4020330205 in words is "four billion, twenty million, three hundred thirty thousand, two hundred five".