1140404321 has 8 divisors (see below), whose sum is σ = 1321173504. Its totient is φ = 964098720.

The previous prime is 1140404311. The next prime is 1140404327. The reversal of 1140404321 is 1234040411.

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 1140404321 - 2²² = 1136210017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1140404293 and 1140404302.

It is not an unprimeable number, because it can be changed into a prime (1140404327) 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, 1115345 + ... + 1116366.

It is an arithmetic number, because the mean of its divisors is an integer number (165146688).

Almost surely, 2^1140404321 is an apocalyptic number.

It is an amenable number.

1140404321 is a deficient number, since it is larger than the sum of its proper divisors (180769183).

1140404321 is an equidigital number, since it uses as much as digits as its factorization.

1140404321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231791.

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

The square root of 1140404321 is about 33769.8729787365. The cubic root of 1140404321 is about 1044.7674126566.

Adding to 1140404321 its reverse (1234040411), we get a palindrome (2374444732).

The spelling of 1140404321 in words is "one billion, one hundred forty million, four hundred four thousand, three hundred twenty-one".