1323120 has 80 divisors (see below), whose sum is σ = 4240800. Its totient is φ = 340992.

The previous prime is 1323109. The next prime is 1323131. The reversal of 1323120 is 213231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1323109) and next prime (1323131).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1323096 and 1323105.

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 15 ways as a sum of consecutive naturals, for example, 8806 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (53010).

2^1323120 is an apocalyptic number.

1323120 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 1323120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2120400).

1323120 is an abundant number, since it is smaller than the sum of its proper divisors (2917680).

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

1323120 is a wasteful number, since it uses less digits than its factorization.

1323120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1323120 is about 1150.2695336311. The cubic root of 1323120 is about 109.7824902985.

Adding to 1323120 its reverse (213231), we get a palindrome (1536351).

The spelling of 1323120 in words is "one million, three hundred twenty-three thousand, one hundred twenty".