1131140 has 24 divisors (see below), whose sum is σ = 2479680. Its totient is φ = 432608.

The previous prime is 1131139. The next prime is 1131157. The reversal of 1131140 is 411311.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770 + ... + 1689.

It is an arithmetic number, because the mean of its divisors is an integer number (103320).

2^1131140 is an apocalyptic number.

1131140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131140 is an abundant number, since it is smaller than the sum of its proper divisors (1348540).

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

1131140 is a wasteful number, since it uses less digits than its factorization.

1131140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491 (or 2489 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1131140 is about 1063.5506569976. The cubic root of 1131140 is about 104.1930585572.

Adding to 1131140 its reverse (411311), we get a palindrome (1542451).

The spelling of 1131140 in words is "one million, one hundred thirty-one thousand, one hundred forty".