11916043 has 4 divisors (see below), whose sum is σ = 12140928. Its totient is φ = 11691160.

The previous prime is 11916041. The next prime is 11916049. The reversal of 11916043 is 34061911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34061911 = 13 ⋅2620147.

It is a cyclic number.

It is not a de Polignac number, because 11916043 - 2¹ = 11916041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11915999 and 11916017.

It is not an unprimeable number, because it can be changed into a prime (11916041) 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 in 3 ways as a sum of consecutive naturals, for example, 112363 + ... + 112468.

It is an arithmetic number, because the mean of its divisors is an integer number (3035232).

Almost surely, 2^11916043 is an apocalyptic number.

11916043 is a deficient number, since it is larger than the sum of its proper divisors (224885).

11916043 is an equidigital number, since it uses as much as digits as its factorization.

11916043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224884.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 11916043 is about 3451.9621956215. The cubic root of 11916043 is about 228.4076719369.

Adding to 11916043 its reverse (34061911), we get a palindrome (45977954).

The spelling of 11916043 in words is "eleven million, nine hundred sixteen thousand, forty-three".