243240424236 has 36 divisors (see below), whose sum is σ = 629156760232. Its totient is φ = 79194556224.

The previous prime is 243240424187. The next prime is 243240424241. The reversal of 243240424236 is 632424042342.

243240424236 is a `hidden beast` number, since 2 + 4 + 3 + 2 + 404 + 242 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 243240424236.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78564481 + ... + 78567576.

Almost surely, 2^243240424236 is an apocalyptic number.

It is an amenable number.

243240424236 is an abundant number, since it is smaller than the sum of its proper divisors (385916335996).

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

243240424236 is a wasteful number, since it uses less digits than its factorization.

243240424236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157132110 (or 157132105 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 36.

Adding to 243240424236 its reverse (632424042342), we get a palindrome (875664466578).

The spelling of 243240424236 in words is "two hundred forty-three billion, two hundred forty million, four hundred twenty-four thousand, two hundred thirty-six".