201020420 has 12 divisors (see below), whose sum is σ = 422142924. Its totient is φ = 80408160.

The previous prime is 201020419. The next prime is 201020423. The reversal of 201020420 is 24020102.

201020420 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 126922756 + 74097664 = 11266^2 + 8608^2 .

It is not an unprimeable number, because it can be changed into a prime (201020423) 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, 5025491 + ... + 5025530.

It is an arithmetic number, because the mean of its divisors is an integer number (35178577).

Almost surely, 2^201020420 is an apocalyptic number.

201020420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201020420 is an abundant number, since it is smaller than the sum of its proper divisors (221122504).

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

201020420 is a wasteful number, since it uses less digits than its factorization.

201020420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10051030 (or 10051028 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 201020420 is about 14178.1670183420. The cubic root of 201020420 is about 585.7964363399.

Adding to 201020420 its reverse (24020102), we get a palindrome (225040522).

The spelling of 201020420 in words is "two hundred one million, twenty thousand, four hundred twenty".