1140204321 has 12 divisors (see below), whose sum is σ = 1691474772. Its totient is φ = 739591776.

The previous prime is 1140204319. The next prime is 1140204337. The reversal of 1140204321 is 1234020411.

1140204321 is a `hidden beast` number, since 1 + 140 + 204 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 714813696 + 425390625 = 26736^2 + 20625^2 .

It is not a de Polignac number, because 1140204321 - 2¹ = 1140204319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1140204294 and 1140204303.

It is not an unprimeable number, because it can be changed into a prime (1140204341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1711686 + ... + 1712351.

It is an arithmetic number, because the mean of its divisors is an integer number (140956231).

Almost surely, 2^1140204321 is an apocalyptic number.

It is an amenable number.

1140204321 is a deficient number, since it is larger than the sum of its proper divisors (551270451).

1140204321 is a wasteful number, since it uses less digits than its factorization.

1140204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424080 (or 3424077 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1140204321 is about 33766.9116295820. The cubic root of 1140204321 is about 1044.7063332379.

Adding to 1140204321 its reverse (1234020411), we get a palindrome (2374224732).

It can be divided in two parts, 114020 and 4321, that added together give a triangular number (118341 = T₄₈₆).

The spelling of 1140204321 in words is "one billion, one hundred forty million, two hundred four thousand, three hundred twenty-one".