40530205 has 4 divisors (see below), whose sum is σ = 48636252. Its totient is φ = 32424160.

The previous prime is 40530199. The next prime is 40530223. The reversal of 40530205 is 50203504.

It is a happy number.

40530205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13344409 + 27185796 = 3653^2 + 5214^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40530205 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 4053016 + ... + 4053025.

It is an arithmetic number, because the mean of its divisors is an integer number (12159063).

Almost surely, 2^40530205 is an apocalyptic number.

It is an amenable number.

40530205 is a deficient number, since it is larger than the sum of its proper divisors (8106047).

40530205 is an equidigital number, since it uses as much as digits as its factorization.

40530205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8106046.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 40530205 is about 6366.3337172976. Note that the first 3 decimals coincide. The cubic root of 40530205 is about 343.4996246218.

Adding to 40530205 its reverse (50203504), we get a palindrome (90733709).

The spelling of 40530205 in words is "forty million, five hundred thirty thousand, two hundred five".