40112005 has 8 divisors (see below), whose sum is σ = 48241152. Its totient is φ = 32018448.

The previous prime is 40112003. The next prime is 40112081. The reversal of 40112005 is 50021104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40112005 - 2¹ = 40112003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40112003) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6349 + ... + 10978.

It is an arithmetic number, because the mean of its divisors is an integer number (6030144).

Almost surely, 2^40112005 is an apocalyptic number.

It is an amenable number.

40112005 is a deficient number, since it is larger than the sum of its proper divisors (8129147).

40112005 is a wasteful number, since it uses less digits than its factorization.

40112005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17795.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 40112005 is about 6333.4039031156. The cubic root of 40112005 is about 342.3141016154.

Adding to 40112005 its reverse (50021104), we get a palindrome (90133109).

Subtracting 40112005 from its reverse (50021104), we obtain a palindrome (9909099).

It can be divided in two parts, 4011 and 2005, that multiplied together give a triangular number (8042055 = T₄₀₁₀).

The spelling of 40112005 in words is "forty million, one hundred twelve thousand, five".