1140443321 has 4 divisors (see below), whose sum is σ = 1144041252. Its totient is φ = 1136845392.

The previous prime is 1140443309. The next prime is 1140443333. The reversal of 1140443321 is 1233440411.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1140443309) and next prime (1140443333).

It can be written as a sum of positive squares in 2 ways, for example, as 42250000 + 1098193321 = 6500^2 + 33139^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140443321 - 2⁶ = 1140443257 is a prime.

It is a super-2 number, since 2×1140443321² = 2601221936827018082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140440321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1798490 + ... + 1799123.

It is an arithmetic number, because the mean of its divisors is an integer number (286010313).

Almost surely, 2^1140443321 is an apocalyptic number.

It is an amenable number.

1140443321 is a deficient number, since it is larger than the sum of its proper divisors (3597931).

1140443321 is an equidigital number, since it uses as much as digits as its factorization.

1140443321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597930.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1140443321 is about 33770.4504115654. The cubic root of 1140443321 is about 1044.7793223112.

Adding to 1140443321 its reverse (1233440411), we get a palindrome (2373883732).

The spelling of 1140443321 in words is "one billion, one hundred forty million, four hundred forty-three thousand, three hundred twenty-one".