202143320442 has 128 divisors (see below), whose sum is σ = 527065989120. Its totient is φ = 56232221760.

The previous prime is 202143320441. The next prime is 202143320453. The reversal of 202143320442 is 244023341202.

202143320442 is a `hidden beast` number, since 2 + 0 + 21 + 433 + 204 + 4 + 2 = 666.

202143320442 is digitally balanced in base 2, 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 not an unprimeable number, because it can be changed into a prime (202143320441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2585943 + ... + 2662965.

It is an arithmetic number, because the mean of its divisors is an integer number (4117703040).

Almost surely, 2^202143320442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202143320442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263532994560).

202143320442 is an abundant number, since it is smaller than the sum of its proper divisors (324922668678).

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

202143320442 is a wasteful number, since it uses less digits than its factorization.

202143320442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77225 (or 77219 counting only the distinct ones).

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

Adding to 202143320442 its reverse (244023341202), we get a palindrome (446166661644).

The spelling of 202143320442 in words is "two hundred two billion, one hundred forty-three million, three hundred twenty thousand, four hundred forty-two".