1121285 has 32 divisors (see below), whose sum is σ = 1641600. Its totient is φ = 725760.

The previous prime is 1121261. The next prime is 1121293. The reversal of 1121285 is 5821211.

It is a happy number.

It is not a de Polignac number, because 1121285 - 2⁶ = 1121221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30287 + ... + 30323.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2^1121285 is an apocalyptic number.

It is an amenable number.

1121285 is a deficient number, since it is larger than the sum of its proper divisors (520315).

1121285 is a wasteful number, since it uses less digits than its factorization.

1121285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101.

The product of its digits is 160, while the sum is 20.

The square root of 1121285 is about 1058.9074558242. The cubic root of 1121285 is about 103.8895832559.

Adding to 1121285 its reverse (5821211), we get a palindrome (6942496).

The spelling of 1121285 in words is "one million, one hundred twenty-one thousand, two hundred eighty-five".