40212112 has 20 divisors (see below), whose sum is σ = 78009516. Its totient is φ = 20080640.

The previous prime is 40212101. The next prime is 40212121. The reversal of 40212112 is 21121204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30074256 + 10137856 = 5484^2 + 3184^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40212092 and 40212101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22848 + ... + 24544.

Almost surely, 2^40212112 is an apocalyptic number.

It is an amenable number.

40212112 is a deficient number, since it is larger than the sum of its proper divisors (37797404).

40212112 is a wasteful number, since it uses less digits than its factorization.

40212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186 (or 3180 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 40212112 is about 6341.3020744954. The cubic root of 40212112 is about 342.5986346357.

Adding to 40212112 its reverse (21121204), we get a palindrome (61333316).

The spelling of 40212112 in words is "forty million, two hundred twelve thousand, one hundred twelve".