11142220142 has 24 divisors (see below), whose sum is σ = 17484068280. Its totient is φ = 5325083280.

The previous prime is 11142220097. The next prime is 11142220183. The reversal of 11142220142 is 24102224111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1966109 + ... + 1971767.

It is an arithmetic number, because the mean of its divisors is an integer number (728502845).

Almost surely, 2^11142220142 is an apocalyptic number.

11142220142 is a deficient number, since it is larger than the sum of its proper divisors (6341848138).

11142220142 is a wasteful number, since it uses less digits than its factorization.

11142220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568 (or 7545 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11142220142 its reverse (24102224111), we get a palindrome (35244444253).

The spelling of 11142220142 in words is "eleven billion, one hundred forty-two million, two hundred twenty thousand, one hundred forty-two".