1122520 has 64 divisors (see below), whose sum is σ = 3052800. Its totient is φ = 362880.

The previous prime is 1122491. The next prime is 1122529. The reversal of 1122520 is 252211.

It is a self number, because there is not a number n which added to its sum of digits gives 1122520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122529) 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 15 ways as a sum of consecutive naturals, for example, 5215 + ... + 5425.

It is an arithmetic number, because the mean of its divisors is an integer number (47700).

2^1122520 is an apocalyptic number.

1122520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526400).

1122520 is an abundant number, since it is smaller than the sum of its proper divisors (1930280).

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

1122520 is a wasteful number, since it uses less digits than its factorization.

1122520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1122520 is about 1059.4904435624. The cubic root of 1122520 is about 103.9277111059.

Adding to 1122520 its reverse (252211), we get a palindrome (1374731).

The spelling of 1122520 in words is "one million, one hundred twenty-two thousand, five hundred twenty".