1122885 has 12 divisors (see below), whose sum is σ = 1946412. Its totient is φ = 598848.

The previous prime is 1122857. The next prime is 1122887. The reversal of 1122885 is 5882211.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 509796 = 783^2 + 714^2 .

It is not a de Polignac number, because 1122885 - 2⁷ = 1122757 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122887) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 12432 + ... + 12521.

It is an arithmetic number, because the mean of its divisors is an integer number (162201).

2^1122885 is an apocalyptic number.

1122885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1122885 is a deficient number, since it is larger than the sum of its proper divisors (823527).

1122885 is a wasteful number, since it uses less digits than its factorization.

1122885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24964 (or 24961 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 1122885 is about 1059.6626821777. The cubic root of 1122885 is about 103.9389743065.

The spelling of 1122885 in words is "one million, one hundred twenty-two thousand, eight hundred eighty-five".