11121142 has 4 divisors (see below), whose sum is σ = 16681716. Its totient is φ = 5560570.

The previous prime is 11121139. The next prime is 11121163. The reversal of 11121142 is 24112111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780284 + ... + 2780287.

It is an arithmetic number, because the mean of its divisors is an integer number (4170429).

Almost surely, 2^11121142 is an apocalyptic number.

11121142 is a deficient number, since it is larger than the sum of its proper divisors (5560574).

11121142 is an equidigital number, since it uses as much as digits as its factorization.

11121142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560573.

The product of its digits is 16, while the sum is 13.

The square root of 11121142 is about 3334.8376272316. The cubic root of 11121142 is about 223.2114465723.

Adding to 11121142 its reverse (24112111), we get a palindrome (35233253).

The spelling of 11121142 in words is "eleven million, one hundred twenty-one thousand, one hundred forty-two".