40112140 has 36 divisors (see below), whose sum is σ = 87082128. Its totient is φ = 15519840.

The previous prime is 40112131. The next prime is 40112143. The reversal of 40112140 is 4121104.

It is a self number, because there is not a number n which added to its sum of digits gives 40112140.

It is not an unprimeable number, because it can be changed into a prime (40112143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18177 + ... + 20263.

It is an arithmetic number, because the mean of its divisors is an integer number (2418948).

Almost surely, 2^40112140 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 40112140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43541064).

40112140 is an abundant number, since it is smaller than the sum of its proper divisors (46969988).

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

40112140 is a wasteful number, since it uses less digits than its factorization.

40112140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158 (or 2125 counting only the distinct ones).

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

The square root of 40112140 is about 6333.4145608826. The cubic root of 40112140 is about 342.3144856430.

Adding to 40112140 its reverse (4121104), we get a palindrome (44233244).

The spelling of 40112140 in words is "forty million, one hundred twelve thousand, one hundred forty".