43420566 has 24 divisors (see below), whose sum is σ = 101019960. Its totient is φ = 12405792.

The previous prime is 43420543. The next prime is 43420579. The reversal of 43420566 is 66502434.

43420566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 73551 + ... + 74138.

It is an arithmetic number, because the mean of its divisors is an integer number (4209165).

Almost surely, 2^43420566 is an apocalyptic number.

43420566 is an abundant number, since it is smaller than the sum of its proper divisors (57599394).

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

43420566 is a wasteful number, since it uses less digits than its factorization.

43420566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147708 (or 147701 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 43420566 is about 6589.4283515340. The cubic root of 43420566 is about 351.4782807883.

The spelling of 43420566 in words is "forty-three million, four hundred twenty thousand, five hundred sixty-six".