40032005 has 16 divisors (see below), whose sum is σ = 53405184. Its totient is φ = 28607040.

The previous prime is 40031987. The next prime is 40032023. The reversal of 40032005 is 50023004.

It is an interprime number because it is at equal distance from previous prime (40031987) and next prime (40032023).

It is not a de Polignac number, because 40032005 - 2⁶ = 40031941 is a prime.

It is a super-2 number, since 2×40032005² = 3205122848640050, which contains 22 as substring.

It is a Duffinian number.

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, 7919 + ... + 11948.

It is an arithmetic number, because the mean of its divisors is an integer number (3337824).

Almost surely, 2^40032005 is an apocalyptic number.

It is an amenable number.

40032005 is a deficient number, since it is larger than the sum of its proper divisors (13373179).

40032005 is a wasteful number, since it uses less digits than its factorization.

40032005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19916.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 40032005 is about 6327.0850318294. The cubic root of 40032005 is about 342.0863779858.

Adding to 40032005 its reverse (50023004), we get a palindrome (90055009).

Subtracting 40032005 from its reverse (50023004), we obtain a palindrome (9990999).

The spelling of 40032005 in words is "forty million, thirty-two thousand, five".