40105066 has 8 divisors (see below), whose sum is σ = 60185124. Its totient is φ = 20043360.

The previous prime is 40105049. The next prime is 40105069. The reversal of 40105066 is 66050104.

It can be written as a sum of positive squares in 2 ways, for example, as 38700841 + 1404225 = 6221^2 + 1185^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40105069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4396 + ... + 9976.

Almost surely, 2^40105066 is an apocalyptic number.

40105066 is a deficient number, since it is larger than the sum of its proper divisors (20080058).

40105066 is a wasteful number, since it uses less digits than its factorization.

40105066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 40105066 is about 6332.8560697366. The cubic root of 40105066 is about 342.2943614359.

The spelling of 40105066 in words is "forty million, one hundred five thousand, sixty-six".