243421341420 has 48 divisors (see below), whose sum is σ = 681759898848. Its totient is φ = 64895201280.

The previous prime is 243421341413. The next prime is 243421341433. The reversal of 243421341420 is 24143124342.

243421341420 is digitally balanced in base 3, 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 (30).

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, 306421 + ... + 762060.

It is an arithmetic number, because the mean of its divisors is an integer number (14203331226).

Almost surely, 2^243421341420 is an apocalyptic number.

243421341420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243421341420 is an abundant number, since it is smaller than the sum of its proper divisors (438338557428).

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

243421341420 is a wasteful number, since it uses less digits than its factorization.

243421341420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072290 (or 1072288 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 243421341420 its reverse (24143124342), we get a palindrome (267564465762).

The spelling of 243421341420 in words is "two hundred forty-three billion, four hundred twenty-one million, three hundred forty-one thousand, four hundred twenty".