1131110442 has 96 divisors (see below), whose sum is σ = 3126689280. Its totient is φ = 286947360.

The previous prime is 1131110441. The next prime is 1131110447. The reversal of 1131110442 is 2440111311.

1131110442 is a `hidden beast` number, since 113 + 1 + 110 + 442 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1131110441) 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 47 ways as a sum of consecutive naturals, for example, 50109 + ... + 69087.

It is an arithmetic number, because the mean of its divisors is an integer number (32569680).

Almost surely, 2^1131110442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131110442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1563344640).

1131110442 is an abundant number, since it is smaller than the sum of its proper divisors (1995578838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131110442 is a wasteful number, since it uses less digits than its factorization.

1131110442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19048 (or 19045 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1131110442 is about 33631.9854008056. The cubic root of 1131110442 is about 1041.9215098745.

Adding to 1131110442 its reverse (2440111311), we get a palindrome (3571221753).

The spelling of 1131110442 in words is "one billion, one hundred thirty-one million, one hundred ten thousand, four hundred forty-two".