4081005 has 24 divisors (see below), whose sum is σ = 7383168. Its totient is φ = 2081376.

The previous prime is 4080997. The next prime is 4081013. The reversal of 4081005 is 5001804.

It is an interprime number because it is at equal distance from previous prime (4080997) and next prime (4081013).

It is not a de Polignac number, because 4081005 - 2³ = 4080997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 937 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (307632).

Almost surely, 2^4081005 is an apocalyptic number.

4081005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4081005 is a deficient number, since it is larger than the sum of its proper divisors (3302163).

4081005 is a wasteful number, since it uses less digits than its factorization.

4081005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977 (or 3974 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 4081005 is about 2020.1497469247. The cubic root of 4081005 is about 159.8045138587.

Adding to 4081005 its reverse (5001804), we get a palindrome (9082809).

The spelling of 4081005 in words is "four million, eighty-one thousand, five".