11042042005 has 8 divisors (see below), whose sum is σ = 13251499992. Its totient is φ = 8832933888.

The previous prime is 11042042003. The next prime is 11042042021. The reversal of 11042042005 is 50024024011.

It can be written as a sum of positive squares in 4 ways, for example, as 361646289 + 10680395716 = 19017^2 + 103346^2 .

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 11042042005 - 2¹ = 11042042003 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 (11042042003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12132 + ... + 149101.

It is an arithmetic number, because the mean of its divisors is an integer number (1656437499).

Almost surely, 2^11042042005 is an apocalyptic number.

It is an amenable number.

11042042005 is a deficient number, since it is larger than the sum of its proper divisors (2209457987).

11042042005 is a wasteful number, since it uses less digits than its factorization.

11042042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174935.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 11042042005 its reverse (50024024011), we get a palindrome (61066066016).

The spelling of 11042042005 in words is "eleven billion, forty-two million, forty-two thousand, five".