243243424 has 24 divisors (see below), whose sum is σ = 489077568. Its totient is φ = 119033280.

The previous prime is 243243409. The next prime is 243243431. The reversal of 243243424 is 424342342.

It is a happy number.

243243424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 243243392 and 243243401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79362 + ... + 82369.

It is an arithmetic number, because the mean of its divisors is an integer number (20378232).

Almost surely, 2^243243424 is an apocalyptic number.

It is an amenable number.

243243424 is an abundant number, since it is smaller than the sum of its proper divisors (245834144).

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

243243424 is a wasteful number, since it uses less digits than its factorization.

243243424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161788 (or 161780 counting only the distinct ones).

The product of its digits is 18432, while the sum is 28.

The square root of 243243424 is about 15596.2631421761. The cubic root of 243243424 is about 624.2334487029.

Adding to 243243424 its reverse (424342342), we get a palindrome (667585766).

The spelling of 243243424 in words is "two hundred forty-three million, two hundred forty-three thousand, four hundred twenty-four".