11042140342321 has 6 divisors (see below), whose sum is σ = 12137228640866. Its totient is φ = 10038309402000.

The previous prime is 11042140342313. The next prime is 11042140342327. The reversal of 11042140342321 is 12324304124011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11038242088225 + 3898254096 = 3322385^2 + 62436^2 .

It is not a de Polignac number, because 11042140342321 - 2³ = 11042140342313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11042140342321.

It is not an unprimeable number, because it can be changed into a prime (11042140342327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45628678980 + ... + 45628679221.

Almost surely, 2^{11042140342321} is an apocalyptic number.

11042140342321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11042140342321 is a deficient number, since it is larger than the sum of its proper divisors (1095088298545).

11042140342321 is an equidigital number, since it uses as much as digits as its factorization.

11042140342321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91257358223 (or 91257358212 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 11042140342321 its reverse (12324304124011), we get a palindrome (23366444466332).

The spelling of 11042140342321 in words is "eleven trillion, forty-two billion, one hundred forty million, three hundred forty-two thousand, three hundred twenty-one".