202143023430 has 32 divisors (see below), whose sum is σ = 494296906464. Its totient is φ = 52887734016.

The previous prime is 202143023429. The next prime is 202143023473. The reversal of 202143023430 is 34320341202.

It is a self number, because there is not a number n which added to its sum of digits gives 202143023430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63565399 + ... + 63568578.

It is an arithmetic number, because the mean of its divisors is an integer number (15446778327).

Almost surely, 2^202143023430 is an apocalyptic number.

202143023430 is an abundant number, since it is smaller than the sum of its proper divisors (292153883034).

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

202143023430 is a wasteful number, since it uses less digits than its factorization.

202143023430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127134040.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 202143023430 its reverse (34320341202), we get a palindrome (236463364632).

The spelling of 202143023430 in words is "two hundred two billion, one hundred forty-three million, twenty-three thousand, four hundred thirty".