1120865 has 8 divisors (see below), whose sum is σ = 1350888. Its totient is φ = 892800.

The previous prime is 1120849. The next prime is 1120871. The reversal of 1120865 is 5680211.

It can be written as a sum of positive squares in 4 ways, for example, as 287296 + 833569 = 536^2 + 913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1120865 - 2⁴ = 1120849 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 1120865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565 + ... + 2165.

It is an arithmetic number, because the mean of its divisors is an integer number (168861).

2^1120865 is an apocalyptic number.

It is an amenable number.

1120865 is a deficient number, since it is larger than the sum of its proper divisors (230023).

1120865 is an equidigital number, since it uses as much as digits as its factorization.

1120865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1120865 is about 1058.7091196358. The cubic root of 1120865 is about 103.8766103203.

The spelling of 1120865 in words is "one million, one hundred twenty thousand, eight hundred sixty-five".