243342220240 has 240 divisors, whose sum is σ = 680902848000. Its totient is φ = 80558392320.

The previous prime is 243342220237. The next prime is 243342220361. The reversal of 243342220240 is 42022243342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 243342220199 and 243342220208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60636474 + ... + 60640486.

It is an arithmetic number, because the mean of its divisors is an integer number (2837095200).

Almost surely, 2^243342220240 is an apocalyptic number.

243342220240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243342220240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340451424000).

243342220240 is an abundant number, since it is smaller than the sum of its proper divisors (437560627760).

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

243342220240 is a wasteful number, since it uses less digits than its factorization.

243342220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4570 (or 4557 counting only the distinct ones).

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

Adding to 243342220240 its reverse (42022243342), we get a palindrome (285364463582).

The spelling of 243342220240 in words is "two hundred forty-three billion, three hundred forty-two million, two hundred twenty thousand, two hundred forty".