243342400 has 84 divisors (see below), whose sum is σ = 684345088. Its totient is φ = 83427840.

The previous prime is 243342397. The next prime is 243342401. The reversal of 243342400 is 4243342.

243342400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (243342401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337 + ... + 22063.

Almost surely, 2^243342400 is an apocalyptic number.

243342400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243342400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342172544).

243342400 is an abundant number, since it is smaller than the sum of its proper divisors (441002688).

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

243342400 is a wasteful number, since it uses less digits than its factorization.

243342400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21756 (or 21741 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 243342400 is about 15599.4358872364. The cubic root of 243342400 is about 624.3181042998.

Adding to 243342400 its reverse (4243342), we get a palindrome (247585742).

The spelling of 243342400 in words is "two hundred forty-three million, three hundred forty-two thousand, four hundred".