40605243 has 16 divisors (see below), whose sum is σ = 63548160. Its totient is φ = 22575456.

The previous prime is 40605241. The next prime is 40605251. The reversal of 40605243 is 34250604.

It is not a de Polignac number, because 40605243 - 2¹ = 40605241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40605241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25353 + ... + 26906.

It is an arithmetic number, because the mean of its divisors is an integer number (3971760).

Almost surely, 2^40605243 is an apocalyptic number.

40605243 is a deficient number, since it is larger than the sum of its proper divisors (22942917).

40605243 is a wasteful number, since it uses less digits than its factorization.

40605243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52306.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40605243 is about 6372.2243369172. The cubic root of 40605243 is about 343.7114800694.

Adding to 40605243 its reverse (34250604), we get a palindrome (74855847).

The spelling of 40605243 in words is "forty million, six hundred five thousand, two hundred forty-three".