11042513 has 2 divisors, whose sum is σ = 11042514. Its totient is φ = 11042512.

The previous prime is 11042501. The next prime is 11042531. The reversal of 11042513 is 31524011.

Together with next prime (11042531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10804369 + 238144 = 3287^2 + 488^2 .

It is an emirp because it is prime and its reverse (31524011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11042513 - 2¹⁸ = 10780369 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11042491 and 11042500.

It is not a weakly prime, because it can be changed into another prime (11042573) by changing a digit.

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 as a sum of consecutive naturals, namely, 5521256 + 5521257.

It is an arithmetic number, because the mean of its divisors is an integer number (5521257).

Almost surely, 2^11042513 is an apocalyptic number.

It is an amenable number.

11042513 is a deficient number, since it is larger than the sum of its proper divisors (1).

11042513 is an equidigital number, since it uses as much as digits as its factorization.

11042513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 11042513 is about 3323.0276857107. The cubic root of 11042513 is about 222.6841500350.

Adding to 11042513 its reverse (31524011), we get a palindrome (42566524).

The spelling of 11042513 in words is "eleven million, forty-two thousand, five hundred thirteen".