1140321 has 16 divisors (see below), whose sum is σ = 1871744. Its totient is φ = 601344.

The previous prime is 1140319. The next prime is 1140341. The reversal of 1140321 is 1230411.

It is a happy number.

It is not a de Polignac number, because 1140321 - 2¹ = 1140319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1140297 and 1140306.

It is not an unprimeable number, because it can be changed into a prime (1140311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1816 + ... + 2361.

It is an arithmetic number, because the mean of its divisors is an integer number (116984).

2^1140321 is an apocalyptic number.

It is an amenable number.

1140321 is a deficient number, since it is larger than the sum of its proper divisors (731423).

1140321 is a wasteful number, since it uses less digits than its factorization.

1140321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1140321 is about 1067.8581366455. The cubic root of 1140321 is about 104.4741967533.

Adding to 1140321 its reverse (1230411), we get a palindrome (2370732).

It can be divided in two parts, 1140 and 321, that multiplied together give a triangular number (365940 = T₈₅₅).

The spelling of 1140321 in words is "one million, one hundred forty thousand, three hundred twenty-one".