202143043220 has 24 divisors (see below), whose sum is σ = 424527906600. Its totient is φ = 80851976192.

The previous prime is 202143043217. The next prime is 202143043231. The reversal of 202143043220 is 22340341202.

It can be written as a sum of positive squares in 4 ways, for example, as 10171125904 + 191971917316 = 100852^2 + 438146^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3485 + ... + 635844.

It is an arithmetic number, because the mean of its divisors is an integer number (17688662775).

Almost surely, 2^202143043220 is an apocalyptic number.

202143043220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202143043220 is an abundant number, since it is smaller than the sum of its proper divisors (222384863380).

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

202143043220 is a wasteful number, since it uses less digits than its factorization.

202143043220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655147 (or 655145 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 202143043220 its reverse (22340341202), we get a palindrome (224483384422).

The spelling of 202143043220 in words is "two hundred two billion, one hundred forty-three million, forty-three thousand, two hundred twenty".