43421404420 has 24 divisors (see below), whose sum is σ = 96548770584. Its totient is φ = 16346881536.

The previous prime is 43421404409. The next prime is 43421404469. The reversal of 43421404420 is 2440412434.

It can be written as a sum of positive squares in 4 ways, for example, as 9536694336 + 33884710084 = 97656^2 + 184078^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63854667 + ... + 63855346.

It is an arithmetic number, because the mean of its divisors is an integer number (4022865441).

Almost surely, 2^43421404420 is an apocalyptic number.

It is an amenable number.

43421404420 is an abundant number, since it is smaller than the sum of its proper divisors (53127366164).

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

43421404420 is a wasteful number, since it uses less digits than its factorization.

43421404420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127710039 (or 127710037 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 43421404420 its reverse (2440412434), we get a palindrome (45861816854).

The spelling of 43421404420 in words is "forty-three billion, four hundred twenty-one million, four hundred four thousand, four hundred twenty".