1140243 has 16 divisors (see below), whose sum is σ = 1656480. Its totient is φ = 697632.

The previous prime is 1140239. The next prime is 1140253. The reversal of 1140243 is 3420411.

It is not a de Polignac number, because 1140243 - 2² = 1140239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1140203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6505 + ... + 6677.

It is an arithmetic number, because the mean of its divisors is an integer number (103530).

2^1140243 is an apocalyptic number.

1140243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1140243 is a deficient number, since it is larger than the sum of its proper divisors (516237).

1140243 is an equidigital number, since it uses as much as digits as its factorization.

1140243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1140243 is about 1067.8216143158. The cubic root of 1140243 is about 104.4718146249.

Adding to 1140243 its reverse (3420411), we get a palindrome (4560654).

The spelling of 1140243 in words is "one million, one hundred forty thousand, two hundred forty-three".