1140305 has 4 divisors (see below), whose sum is σ = 1368372. Its totient is φ = 912240.

The previous prime is 1140289. The next prime is 1140311. The reversal of 1140305 is 5030411.

1140305 is nontrivially palindromic in base 4.

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

It can be written as a sum of positive squares in 2 ways, for example, as 719104 + 421201 = 848^2 + 649^2 .

It is not a de Polignac number, because 1140305 - 2⁴ = 1140289 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1140305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114026 + ... + 114035.

It is an arithmetic number, because the mean of its divisors is an integer number (342093).

2^1140305 is an apocalyptic number.

It is an amenable number.

1140305 is a deficient number, since it is larger than the sum of its proper divisors (228067).

1140305 is an equidigital number, since it uses as much as digits as its factorization.

1140305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228066.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1140305 is about 1067.8506449874. The cubic root of 1140305 is about 104.4737081205.

Adding to 1140305 its reverse (5030411), we get a palindrome (6170716).

The spelling of 1140305 in words is "one million, one hundred forty thousand, three hundred five".