40240605 has 16 divisors (see below), whose sum is σ = 64620864. Its totient is φ = 21383040.

The previous prime is 40240597. The next prime is 40240609. The reversal of 40240605 is 50604204.

It is a happy number.

40240605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40240605 - 2³ = 40240597 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 (40240609) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 559 + ... + 8988.

It is an arithmetic number, because the mean of its divisors is an integer number (4038804).

Almost surely, 2^40240605 is an apocalyptic number.

It is an amenable number.

40240605 is a deficient number, since it is larger than the sum of its proper divisors (24380259).

40240605 is a wasteful number, since it uses less digits than its factorization.

40240605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9836.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40240605 is about 6343.5482972860. The cubic root of 40240605 is about 342.6795336296.

Adding to 40240605 its reverse (50604204), we get a palindrome (90844809).

The spelling of 40240605 in words is "forty million, two hundred forty thousand, six hundred five".