43125666 has 16 divisors (see below), whose sum is σ = 86832000. Its totient is φ = 14278448.

The previous prime is 43125661. The next prime is 43125673. The reversal of 43125666 is 66652134.

It is not an unprimeable number, because it can be changed into a prime (43125661) 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, 23226 + ... + 25013.

It is an arithmetic number, because the mean of its divisors is an integer number (5427000).

Almost surely, 2^43125666 is an apocalyptic number.

43125666 is an abundant number, since it is smaller than the sum of its proper divisors (43706334).

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

43125666 is a wasteful number, since it uses less digits than its factorization.

43125666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48393.

The product of its digits is 25920, while the sum is 33.

The square root of 43125666 is about 6567.0134764594. The cubic root of 43125666 is about 350.6807594000.

The spelling of 43125666 in words is "forty-three million, one hundred twenty-five thousand, six hundred sixty-six".