43240066 has 8 divisors (see below), whose sum is σ = 64929420. Its totient is φ = 21596928.

The previous prime is 43240051. The next prime is 43240081. The reversal of 43240066 is 66004234.

It is an interprime number because it is at equal distance from previous prime (43240051) and next prime (43240081).

It can be written as a sum of positive squares in 2 ways, for example, as 31192225 + 12047841 = 5585^2 + 3471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 43240066.

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 3 ways as a sum of consecutive naturals, for example, 9111 + ... + 13018.

Almost surely, 2^43240066 is an apocalyptic number.

43240066 is a deficient number, since it is larger than the sum of its proper divisors (21689354).

43240066 is a wasteful number, since it uses less digits than its factorization.

43240066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23108.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 43240066 is about 6575.7179075748. The cubic root of 43240066 is about 350.9905707107.

The spelling of 43240066 in words is "forty-three million, two hundred forty thousand, sixty-six".