43200423440 has 80 divisors (see below), whose sum is σ = 105770016000. Its totient is φ = 16377140736.

The previous prime is 43200423433. The next prime is 43200423449. The reversal of 43200423440 is 4432400234.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (43200423449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92861 + ... + 308259.

It is an arithmetic number, because the mean of its divisors is an integer number (1322125200).

Almost surely, 2^43200423440 is an apocalyptic number.

43200423440 is a gapful number since it is divisible by the number (40) 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 43200423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52885008000).

43200423440 is an abundant number, since it is smaller than the sum of its proper divisors (62569592560).

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

43200423440 is a wasteful number, since it uses less digits than its factorization.

43200423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215544 (or 215538 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 43200423440 its reverse (4432400234), we get a palindrome (47632823674).

The spelling of 43200423440 in words is "forty-three billion, two hundred million, four hundred twenty-three thousand, four hundred forty".