202243121430 has 64 divisors (see below), whose sum is σ = 555471019008. Its totient is φ = 46164746880.

The previous prime is 202243121407. The next prime is 202243121449. The reversal of 202243121430 is 34121342202.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 202243121430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 492061 + ... + 804120.

It is an arithmetic number, because the mean of its divisors is an integer number (8679234672).

Almost surely, 2^202243121430 is an apocalyptic number.

202243121430 is an abundant number, since it is smaller than the sum of its proper divisors (353227897578).

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

202243121430 is a wasteful number, since it uses less digits than its factorization.

202243121430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296941.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 202243121430 its reverse (34121342202), we get a palindrome (236364463632).

The spelling of 202243121430 in words is "two hundred two billion, two hundred forty-three million, one hundred twenty-one thousand, four hundred thirty".