1120805 has 16 divisors (see below), whose sum is σ = 1588224. Its totient is φ = 743040.

The previous prime is 1120799. The next prime is 1120807. The reversal of 1120805 is 5080211.

It is not a de Polignac number, because 1120805 - 2⁶ = 1120741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120807) 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, 569 + ... + 1601.

It is an arithmetic number, because the mean of its divisors is an integer number (99264).

2^1120805 is an apocalyptic number.

It is an amenable number.

1120805 is a deficient number, since it is larger than the sum of its proper divisors (467419).

1120805 is a wasteful number, since it uses less digits than its factorization.

1120805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1120805 is about 1058.6807828614. The cubic root of 1120805 is about 103.8747567793.

The spelling of 1120805 in words is "one million, one hundred twenty thousand, eight hundred five".