43042566 has 16 divisors (see below), whose sum is σ = 98383104. Its totient is φ = 12297864.

The previous prime is 43042561. The next prime is 43042603. The reversal of 43042566 is 66524034.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43042561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512370 + ... + 512453.

It is an arithmetic number, because the mean of its divisors is an integer number (6148944).

Almost surely, 2^43042566 is an apocalyptic number.

43042566 is an abundant number, since it is smaller than the sum of its proper divisors (55340538).

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

43042566 is a wasteful number, since it uses less digits than its factorization.

43042566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024835.

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

The square root of 43042566 is about 6560.6833485545. The cubic root of 43042566 is about 350.4553691875.

The spelling of 43042566 in words is "forty-three million, forty-two thousand, five hundred sixty-six".