243420200430 has 128 divisors (see below), whose sum is σ = 659578982400. Its totient is φ = 56959641600.

The previous prime is 243420200411. The next prime is 243420200479. The reversal of 243420200430 is 34002024342.

It is a self number, because there is not a number n which added to its sum of digits gives 243420200430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3948886 + ... + 4010054.

It is an arithmetic number, because the mean of its divisors is an integer number (5152960800).

Almost surely, 2^243420200430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243420200430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329789491200).

243420200430 is an abundant number, since it is smaller than the sum of its proper divisors (416158781970).

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

243420200430 is a wasteful number, since it uses less digits than its factorization.

243420200430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61610.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 243420200430 its reverse (34002024342), we get a palindrome (277422224772).

The spelling of 243420200430 in words is "two hundred forty-three billion, four hundred twenty million, two hundred thousand, four hundred thirty".