43221404040 has 128 divisors (see below), whose sum is σ = 139666636800. Its totient is φ = 10668936960.

The previous prime is 43221404011. The next prime is 43221404059. The reversal of 43221404040 is 4040412234.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 43221404040.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167020 + ... + 338139.

It is an arithmetic number, because the mean of its divisors is an integer number (1091145600).

Almost surely, 2^43221404040 is an apocalyptic number.

43221404040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43221404040 is an abundant number, since it is smaller than the sum of its proper divisors (96445232760).

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

43221404040 is a wasteful number, since it uses less digits than its factorization.

43221404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505227 (or 505223 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 43221404040 its reverse (4040412234), we get a palindrome (47261816274).

The spelling of 43221404040 in words is "forty-three billion, two hundred twenty-one million, four hundred four thousand, forty".