202143434220 has 768 divisors, whose sum is σ = 806357422080. Its totient is φ = 40902008832.

The previous prime is 202143434209. The next prime is 202143434239. The reversal of 202143434220 is 22434341202.

202143434220 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 4 + 3 + 434 + 220 = 666.

202143434220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 132726379 + ... + 132727901.

It is an arithmetic number, because the mean of its divisors is an integer number (1049944560).

Almost surely, 2^202143434220 is an apocalyptic number.

202143434220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202143434220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403178711040).

202143434220 is an abundant number, since it is smaller than the sum of its proper divisors (604213987860).

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

202143434220 is a wasteful number, since it uses less digits than its factorization.

202143434220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 202143434220 its reverse (22434341202), we get a palindrome (224577775422).

The spelling of 202143434220 in words is "two hundred two billion, one hundred forty-three million, four hundred thirty-four thousand, two hundred twenty".