40001105 has 4 divisors (see below), whose sum is σ = 48001332. Its totient is φ = 32000880.

The previous prime is 40001083. The next prime is 40001111. The reversal of 40001105 is 50110004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5755201 + 34245904 = 2399^2 + 5852^2 .

It is not a de Polignac number, because 40001105 - 2⁶ = 40001041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4000106 + ... + 4000115.

It is an arithmetic number, because the mean of its divisors is an integer number (12000333).

Almost surely, 2^40001105 is an apocalyptic number.

It is an amenable number.

40001105 is a deficient number, since it is larger than the sum of its proper divisors (8000227).

40001105 is an equidigital number, since it uses as much as digits as its factorization.

40001105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000226.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 40001105 is about 6324.6426776538. The cubic root of 40001105 is about 341.9983385120.

Adding to 40001105 its reverse (50110004), we get a palindrome (90111109).

The spelling of 40001105 in words is "forty million, one thousand, one hundred five".