1121125 has 8 divisors (see below), whose sum is σ = 1399320.
Its totient is φ = 896800.
The previous prime is 1121101. The next prime is 1121143. The reversal of 1121125 is 5211211.
Adding to 1121125 its reverse (5211211), we get a palindrome (6332336).
It can be divided in two parts, 11211 and 25, that added together give a square (11236 = 1062).
It can be written as a sum of positive squares in 4 ways, for example, as 43681 + 1077444 = 209^2 + 1038^2
It is not a de Polignac number, because 1121125 - 25 = 1121093 is a prime.
It is a congruent number.
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, 4360 + ... + 4609.
It is an arithmetic number, because the mean of its divisors is an integer number (174915).
21121125 is an apocalyptic number.
It is an amenable number.
1121125 is a deficient number, since it is larger than the sum of its proper divisors (278195).
1121125 is an frugal number, since it uses more digits than its factorization.
1121125 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8984 (or 8974 counting only the distinct ones).
The product of its digits is 20, while the sum is 13.
The square root of 1121125 is about 1058.8319035617.
The cubic root of 1121125 is about 103.8846415672.
The spelling of 1121125 in words is "one million, one hundred twenty-one thousand, one hundred twenty-five".