1140221243 has 8 divisors (see below), whose sum is σ = 1306299360. Its totient is φ = 974940480.

The previous prime is 1140221233. The next prime is 1140221273. The reversal of 1140221243 is 3421220411.

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

It is a cyclic number.

It is not a de Polignac number, because 1140221243 - 2¹⁸ = 1139959099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140221233) 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, 196268 + ... + 201993.

It is an arithmetic number, because the mean of its divisors is an integer number (163287420).

Almost surely, 2^1140221243 is an apocalyptic number.

1140221243 is a deficient number, since it is larger than the sum of its proper divisors (166078117).

1140221243 is an equidigital number, since it uses as much as digits as its factorization.

1140221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398677.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1140221243 is about 33767.1621993913. The cubic root of 1140221243 is about 1044.7115014441.

Adding to 1140221243 its reverse (3421220411), we get a palindrome (4561441654).

The spelling of 1140221243 in words is "one billion, one hundred forty million, two hundred twenty-one thousand, two hundred forty-three".