1122128 has 40 divisors (see below), whose sum is σ = 2553408. Its totient is φ = 467712.

The previous prime is 1122113. The next prime is 1122131. The reversal of 1122128 is 8212211.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

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, 4700 + ... + 4932.

2^1122128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276704).

1122128 is an abundant number, since it is smaller than the sum of its proper divisors (1431280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1122128 is a wasteful number, since it uses less digits than its factorization.

1122128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 285 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

The square root of 1122128 is about 1059.3054328191. The cubic root of 1122128 is about 103.9156120176.

Adding to 1122128 its reverse (8212211), we get a palindrome (9334339).

The spelling of 1122128 in words is "one million, one hundred twenty-two thousand, one hundred twenty-eight".