40430205 has 64 divisors (see below), whose sum is σ = 77760000. Its totient is φ = 19869696.

The previous prime is 40430197. The next prime is 40430209. The reversal of 40430205 is 50203404.

It is a happy number.

It is not a de Polignac number, because 40430205 - 2³ = 40430197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89821 + ... + 90269.

It is an arithmetic number, because the mean of its divisors is an integer number (1215000).

Almost surely, 2^40430205 is an apocalyptic number.

40430205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40430205 is a deficient number, since it is larger than the sum of its proper divisors (37329795).

40430205 is a wasteful number, since it uses less digits than its factorization.

40430205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40430205 is about 6358.4750530296. The cubic root of 40430205 is about 343.2168869142.

Adding to 40430205 its reverse (50203404), we get a palindrome (90633609).

The spelling of 40430205 in words is "forty million, four hundred thirty thousand, two hundred five".