11800043 has 2 divisors, whose sum is σ = 11800044. Its totient is φ = 11800042.

The previous prime is 11800037. The next prime is 11800049. The reversal of 11800043 is 34000811.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (11800037) and next prime (11800049).

It is a cyclic number.

It is not a de Polignac number, because 11800043 - 2⁶ = 11799979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11799994 and 11800030.

It is not a weakly prime, because it can be changed into another prime (11800049) 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, 5900021 + 5900022.

It is an arithmetic number, because the mean of its divisors is an integer number (5900022).

Almost surely, 2^11800043 is an apocalyptic number.

11800043 is a deficient number, since it is larger than the sum of its proper divisors (1).

11800043 is an equidigital number, since it uses as much as digits as its factorization.

11800043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 11800043 is about 3435.1190663498. The cubic root of 11800043 is about 227.6640880367.

Adding to 11800043 its reverse (34000811), we get a palindrome (45800854).

The spelling of 11800043 in words is "eleven million, eight hundred thousand, forty-three".