4205145220 has 12 divisors (see below), whose sum is σ = 8830805004. Its totient is φ = 1682058080.

The previous prime is 4205145209. The next prime is 4205145221. The reversal of 4205145220 is 225415024.

4205145220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1803361156 + 2401784064 = 42466^2 + 49008^2 .

It is not an unprimeable number, because it can be changed into a prime (4205145221) 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, 105128611 + ... + 105128650.

It is an arithmetic number, because the mean of its divisors is an integer number (735900417).

Almost surely, 2^4205145220 is an apocalyptic number.

It is an amenable number.

4205145220 is an abundant number, since it is smaller than the sum of its proper divisors (4625659784).

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

4205145220 is a wasteful number, since it uses less digits than its factorization.

4205145220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210257270 (or 210257268 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 4205145220 is about 64847.0910681428. The cubic root of 4205145220 is about 1614.0872220358.

The spelling of 4205145220 in words is "four billion, two hundred five million, one hundred forty-five thousand, two hundred twenty".