1120565 has 4 divisors (see below), whose sum is σ = 1344684. Its totient is φ = 896448.

The previous prime is 1120549. The next prime is 1120573. The reversal of 1120565 is 5650211.

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 552049 + 568516 = 743^2 + 754^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120565 - 2⁴ = 1120549 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 112052 + ... + 112061.

It is an arithmetic number, because the mean of its divisors is an integer number (336171).

2^1120565 is an apocalyptic number.

It is an amenable number.

1120565 is a deficient number, since it is larger than the sum of its proper divisors (224119).

1120565 is an equidigital number, since it uses as much as digits as its factorization.

1120565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224118.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1120565 is about 1058.5674281783. The cubic root of 1120565 is about 103.8673419536.

Adding to 1120565 its reverse (5650211), we get a palindrome (6770776).

The spelling of 1120565 in words is "one million, one hundred twenty thousand, five hundred sixty-five".