11042005 has 16 divisors (see below), whose sum is σ = 14346864. Its totient is φ = 8110080.

The previous prime is 11041999. The next prime is 11042029. The reversal of 11042005 is 50024011.

It can be written as a sum of positive squares in 8 ways, for example, as 531441 + 10510564 = 729^2 + 3242^2 .

It is not a de Polignac number, because 11042005 - 2⁹ = 11041493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 16375 + ... + 17035.

It is an arithmetic number, because the mean of its divisors is an integer number (896679).

Almost surely, 2^11042005 is an apocalyptic number.

It is an amenable number.

11042005 is a deficient number, since it is larger than the sum of its proper divisors (3304859).

11042005 is a wasteful number, since it uses less digits than its factorization.

11042005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

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

The square root of 11042005 is about 3322.9512485139. The cubic root of 11042005 is about 222.6807351938.

Adding to 11042005 its reverse (50024011), we get a palindrome (61066016).

The spelling of 11042005 in words is "eleven million, forty-two thousand, five".