43421120 has 56 divisors (see below), whose sum is σ = 106984800. Its totient is φ = 16765952.

The previous prime is 43421113. The next prime is 43421143. The reversal of 43421120 is 2112434.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 6941 + ... + 11619.

Almost surely, 2^43421120 is an apocalyptic number.

43421120 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 43421120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53492400).

43421120 is an abundant number, since it is smaller than the sum of its proper divisors (63563680).

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

43421120 is a wasteful number, since it uses less digits than its factorization.

43421120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725 (or 4715 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 43421120 is about 6589.4703884303. The cubic root of 43421120 is about 351.4797756110.

Adding to 43421120 its reverse (2112434), we get a palindrome (45533554).

The spelling of 43421120 in words is "forty-three million, four hundred twenty-one thousand, one hundred twenty".