1120287 has 12 divisors (see below), whose sum is σ = 1737816. Its totient is φ = 640080.

The previous prime is 1120277. The next prime is 1120289. The reversal of 1120287 is 7820211.

It is not a de Polignac number, because 1120287 - 2⁴ = 1120271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3664 + ... + 3957.

It is an arithmetic number, because the mean of its divisors is an integer number (144818).

2^1120287 is an apocalyptic number.

1120287 is a deficient number, since it is larger than the sum of its proper divisors (617529).

1120287 is an equidigital number, since it uses as much as digits as its factorization.

1120287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7638 (or 7631 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1120287 is about 1058.4361104951. The cubic root of 1120287 is about 103.8587517902.

Adding to 1120287 its reverse (7820211), we get a palindrome (8940498).

The spelling of 1120287 in words is "one million, one hundred twenty thousand, two hundred eighty-seven".