243432420 has 96 divisors (see below), whose sum is σ = 849816576. Its totient is φ = 50582400.

The previous prime is 243432403. The next prime is 243432421. The reversal of 243432420 is 24234342.

It is not an unprimeable number, because it can be changed into a prime (243432421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21726 + ... + 30965.

It is an arithmetic number, because the mean of its divisors is an integer number (8852256).

Almost surely, 2^243432420 is an apocalyptic number.

243432420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243432420 is an abundant number, since it is smaller than the sum of its proper divisors (606384156).

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

243432420 is a wasteful number, since it uses less digits than its factorization.

243432420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52721 (or 52719 counting only the distinct ones).

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

The square root of 243432420 is about 15602.3209811874. The cubic root of 243432420 is about 624.3950797700.

Adding to 243432420 its reverse (24234342), we get a palindrome (267666762).

The spelling of 243432420 in words is "two hundred forty-three million, four hundred thirty-two thousand, four hundred twenty".