40401212 has 12 divisors (see below), whose sum is σ = 71402856. Its totient is φ = 20000400.

The previous prime is 40401187. The next prime is 40401217. The reversal of 40401212 is 21210404.

40401212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

40401212 is a modest number, since divided by 1212 gives 404 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401217) 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 3 ways as a sum of consecutive naturals, for example, 49598 + ... + 50405.

It is an arithmetic number, because the mean of its divisors is an integer number (5950238).

Almost surely, 2^40401212 is an apocalyptic number.

It is an amenable number.

40401212 is a deficient number, since it is larger than the sum of its proper divisors (31001644).

40401212 is a wasteful number, since it uses less digits than its factorization.

40401212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100108 (or 100106 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 40401212 is about 6356.1947736047. The cubic root of 40401212 is about 343.1348256040.

Adding to 40401212 its reverse (21210404), we get a palindrome (61611616).

The spelling of 40401212 in words is "forty million, four hundred one thousand, two hundred twelve".