11142243 has 48 divisors (see below), whose sum is σ = 19408896. Its totient is φ = 6027840.

The previous prime is 11142223. The next prime is 11142247. The reversal of 11142243 is 34224111.

It is a Cunningham number, because it is equal to 3338²-1.

It is not a de Polignac number, because 11142243 - 2⁵ = 11142211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11142247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156898 + ... + 156968.

It is an arithmetic number, because the mean of its divisors is an integer number (404352).

Almost surely, 2^11142243 is an apocalyptic number.

11142243 is a deficient number, since it is larger than the sum of its proper divisors (8266653).

11142243 is a wasteful number, since it uses less digits than its factorization.

11142243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 181 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 11142243 is about 3337.9998502097. Note that the first 3 decimals coincide. The cubic root of 11142243 is about 223.3525294755.

Adding to 11142243 its reverse (34224111), we get a palindrome (45366354).

The spelling of 11142243 in words is "eleven million, one hundred forty-two thousand, two hundred forty-three".