43221440424 has 64 divisors (see below), whose sum is σ = 115008906240. Its totient is φ = 13488650240.

The previous prime is 43221440401. The next prime is 43221440453. The reversal of 43221440424 is 42404412234.

It is a junction number, because it is equal to n+sod(n) for n = 43221440391 and 43221440400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199389 + ... + 355244.

It is an arithmetic number, because the mean of its divisors is an integer number (1797014160).

Almost surely, 2^43221440424 is an apocalyptic number.

It is an amenable number.

43221440424 is an abundant number, since it is smaller than the sum of its proper divisors (71787465816).

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

43221440424 is a wasteful number, since it uses less digits than its factorization.

43221440424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554850 (or 554846 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 43221440424 its reverse (42404412234), we get a palindrome (85625852658).

The spelling of 43221440424 in words is "forty-three billion, two hundred twenty-one million, four hundred forty thousand, four hundred twenty-four".