11242143 has 12 divisors (see below), whose sum is σ = 17715048. Its totient is φ = 6813360.

The previous prime is 11242123. The next prime is 11242157. The reversal of 11242143 is 34124211.

It is not a de Polignac number, because 11242143 - 2⁶ = 11242079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11242123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56680 + ... + 56877.

It is an arithmetic number, because the mean of its divisors is an integer number (1476254).

Almost surely, 2^11242143 is an apocalyptic number.

11242143 is a deficient number, since it is larger than the sum of its proper divisors (6472905).

11242143 is a wasteful number, since it uses less digits than its factorization.

11242143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113574 (or 113571 counting only the distinct ones).

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

The square root of 11242143 is about 3352.9305092710. The cubic root of 11242143 is about 224.0180616282.

Adding to 11242143 its reverse (34124211), we get a palindrome (45366354).

The spelling of 11242143 in words is "eleven million, two hundred forty-two thousand, one hundred forty-three".