40240205212 has 24 divisors (see below), whose sum is σ = 71182092800. Its totient is φ = 19902893616.

The previous prime is 40240205111. The next prime is 40240205219. The reversal of 40240205212 is 21250204204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240205219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325489 + ... + 431767.

Almost surely, 2^40240205212 is an apocalyptic number.

It is an amenable number.

40240205212 is a deficient number, since it is larger than the sum of its proper divisors (30941887588).

40240205212 is a wasteful number, since it uses less digits than its factorization.

40240205212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107305 (or 107303 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 40240205212 its reverse (21250204204), we get a palindrome (61490409416).

The spelling of 40240205212 in words is "forty billion, two hundred forty million, two hundred five thousand, two hundred twelve".