243234424240 has 40 divisors (see below), whose sum is σ = 575105132880. Its totient is φ = 95644720896.

The previous prime is 243234424229. The next prime is 243234424243. The reversal of 243234424240 is 42424432342.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 243234424196 and 243234424205.

It is not an unprimeable number, because it can be changed into a prime (243234424243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25761639 + ... + 25771078.

It is an arithmetic number, because the mean of its divisors is an integer number (14377628322).

Almost surely, 2^243234424240 is an apocalyptic number.

243234424240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243234424240 is an abundant number, since it is smaller than the sum of its proper divisors (331870708640).

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

243234424240 is a wasteful number, since it uses less digits than its factorization.

243234424240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51532789 (or 51532783 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 243234424240 its reverse (42424432342), we get a palindrome (285658856582).

The spelling of 243234424240 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred twenty-four thousand, two hundred forty".