1111123142 has 16 divisors (see below), whose sum is σ = 1724209152. Its totient is φ = 536465160.

The previous prime is 1111123141. The next prime is 1111123157. The reversal of 1111123142 is 2413211111.

It is a self number, because there is not a number n which added to its sum of digits gives 1111123142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111123141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9353 + ... + 48059.

It is an arithmetic number, because the mean of its divisors is an integer number (107763072).

Almost surely, 2^1111123142 is an apocalyptic number.

1111123142 is a deficient number, since it is larger than the sum of its proper divisors (613086010).

1111123142 is a wasteful number, since it uses less digits than its factorization.

1111123142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39203.

The product of its digits is 48, while the sum is 17.

The square root of 1111123142 is about 33333.5137961782. The cubic root of 1111123142 is about 1035.7479069147.

Adding to 1111123142 its reverse (2413211111), we get a palindrome (3524334253).

The spelling of 1111123142 in words is "one billion, one hundred eleven million, one hundred twenty-three thousand, one hundred forty-two".