243342422440 has 64 divisors (see below), whose sum is σ = 599303673360. Its totient is φ = 88376555520.

The previous prime is 243342422419. The next prime is 243342422443. The reversal of 243342422440 is 44224243342.

It can be written as a sum of positive squares in 8 ways, for example, as 374267716 + 242968154724 = 19346^2 + 492918^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243342422396 and 243342422405.

It is not an unprimeable number, because it can be changed into a prime (243342422443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3804069 + ... + 3867508.

Almost surely, 2^243342422440 is an apocalyptic number.

243342422440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243342422440 is an abundant number, since it is smaller than the sum of its proper divisors (355961250920).

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

243342422440 is a wasteful number, since it uses less digits than its factorization.

243342422440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7671662 (or 7671658 counting only the distinct ones).

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

Adding to 243342422440 its reverse (44224243342), we get a palindrome (287566665782).

The spelling of 243342422440 in words is "two hundred forty-three billion, three hundred forty-two million, four hundred twenty-two thousand, four hundred forty".