11142245 has 4 divisors (see below), whose sum is σ = 13370700. Its totient is φ = 8913792.

The previous prime is 11142223. The next prime is 11142247. The reversal of 11142245 is 54224111.

It is a happy number.

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

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4008004 + 7134241 = 2002^2 + 2671^2 .

It is a cyclic number.

It is not a de Polignac number, because 11142245 - 2⁶ = 11142181 is a prime.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1114220 + ... + 1114229.

It is an arithmetic number, because the mean of its divisors is an integer number (3342675).

Almost surely, 2^11142245 is an apocalyptic number.

It is an amenable number.

11142245 is a deficient number, since it is larger than the sum of its proper divisors (2228455).

11142245 is an equidigital number, since it uses as much as digits as its factorization.

11142245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228454.

The product of its digits is 320, while the sum is 20.

The square root of 11142245 is about 3338.0001497903. Note that the first 3 decimals coincide. The cubic root of 11142245 is about 223.3525428392.

Adding to 11142245 its reverse (54224111), we get a palindrome (65366356).

The spelling of 11142245 in words is "eleven million, one hundred forty-two thousand, two hundred forty-five".