202143321234 has 48 divisors (see below), whose sum is σ = 464811859512. Its totient is φ = 63271010304.

The previous prime is 202143321199. The next prime is 202143321241. The reversal of 202143321234 is 432123341202.

202143321234 is a `hidden beast` number, since 202 + 1 + 4 + 332 + 123 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 95212359225 + 106930962009 = 308565^2 + 327003^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202143321198 and 202143321207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 630319 + ... + 895314.

Almost surely, 2^202143321234 is an apocalyptic number.

202143321234 is an abundant number, since it is smaller than the sum of its proper divisors (262668538278).

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

202143321234 is a wasteful number, since it uses less digits than its factorization.

202143321234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526091 (or 1526088 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 202143321234 its reverse (432123341202), we get a palindrome (634266662436).

The spelling of 202143321234 in words is "two hundred two billion, one hundred forty-three million, three hundred twenty-one thousand, two hundred thirty-four".