11142224 has 20 divisors (see below), whose sum is σ = 21689460. Its totient is φ = 5544960.

The previous prime is 11142223. The next prime is 11142247. The reversal of 11142224 is 42224111.

It can be written as a sum of positive squares in 2 ways, for example, as 10679824 + 462400 = 3268^2 + 680^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2144 + ... + 5184.

It is an arithmetic number, because the mean of its divisors is an integer number (1084473).

Almost surely, 2^11142224 is an apocalyptic number.

It is an amenable number.

11142224 is a deficient number, since it is larger than the sum of its proper divisors (10547236).

11142224 is a wasteful number, since it uses less digits than its factorization.

11142224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278 (or 3272 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 11142224 is about 3337.9970041928. The cubic root of 11142224 is about 223.3524025202.

Adding to 11142224 its reverse (42224111), we get a palindrome (53366335).

It can be divided in two parts, 111 and 42224, that multiplied together give a palindrome (4686864).

The spelling of 11142224 in words is "eleven million, one hundred forty-two thousand, two hundred twenty-four".