1143140 has 24 divisors (see below), whose sum is σ = 2442552. Its totient is φ = 449280.

The previous prime is 1143113. The next prime is 1143143. The reversal of 1143140 is 413411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73984 + 1069156 = 272^2 + 1034^2 .

It is not an unprimeable number, because it can be changed into a prime (1143143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (101773).

2^1143140 is an apocalyptic number.

1143140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143140 is an abundant number, since it is smaller than the sum of its proper divisors (1299412).

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

1143140 is a wasteful number, since it uses less digits than its factorization.

1143140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1143140 is about 1069.1772537797. The cubic root of 1143140 is about 104.5602165098.

Adding to 1143140 its reverse (413411), we get a palindrome (1556551).

The spelling of 1143140 in words is "one million, one hundred forty-three thousand, one hundred forty".