40012112 has 80 divisors (see below), whose sum is σ = 93327360. Its totient is φ = 16257024.

The previous prime is 40012109. The next prime is 40012127. The reversal of 40012112 is 21121004.

It is a junction number, because it is equal to n+sod(n) for n = 40012093 and 40012102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314993 + ... + 315119.

It is an arithmetic number, because the mean of its divisors is an integer number (1166592).

Almost surely, 2^40012112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40012112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46663680).

40012112 is an abundant number, since it is smaller than the sum of its proper divisors (53315248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40012112 is a wasteful number, since it uses less digits than its factorization.

40012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 40012112 is about 6325.5127855376. The cubic root of 40012112 is about 342.0297045663.

Adding to 40012112 its reverse (21121004), we get a palindrome (61133116).

The spelling of 40012112 in words is "forty million, twelve thousand, one hundred twelve".