1280120 has 16 divisors (see below), whose sum is σ = 2880360. Its totient is φ = 512032.

The previous prime is 1280119. The next prime is 1280129. The reversal of 1280120 is 210821.

It is a junction number, because it is equal to n+sod(n) for n = 1280095 and 1280104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15962 + ... + 16041.

2^1280120 is an apocalyptic number.

1280120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280120 is an abundant number, since it is smaller than the sum of its proper divisors (1600240).

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

1280120 is a wasteful number, since it uses less digits than its factorization.

1280120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32014 (or 32010 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1280120 is about 1131.4238816642. The cubic root of 1280120 is about 108.5800975798.

Adding to 1280120 its reverse (210821), we get a palindrome (1490941).

It can be divided in two parts, 12801 and 20, that added together give a palindrome (12821).

The spelling of 1280120 in words is "one million, two hundred eighty thousand, one hundred twenty".