1140142243 has 8 divisors (see below), whose sum is σ = 1157263200. Its totient is φ = 1123117248.

The previous prime is 1140142229. The next prime is 1140142303. The reversal of 1140142243 is 3422410411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140142243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140143243) 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, 130 + ... + 47752.

It is an arithmetic number, because the mean of its divisors is an integer number (144657900).

Almost surely, 2^1140142243 is an apocalyptic number.

1140142243 is a deficient number, since it is larger than the sum of its proper divisors (17120957).

1140142243 is an equidigital number, since it uses as much as digits as its factorization.

1140142243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47981.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1140142243 is about 33765.9924036004. The cubic root of 1140142243 is about 1044.6873733446.

Adding to 1140142243 its reverse (3422410411), we get a palindrome (4562552654).

The spelling of 1140142243 in words is "one billion, one hundred forty million, one hundred forty-two thousand, two hundred forty-three".