1212280 has 16 divisors (see below), whose sum is σ = 2727720. Its totient is φ = 484896.

The previous prime is 1212259. The next prime is 1212283. The reversal of 1212280 is 822121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15114 + ... + 15193.

2^1212280 is an apocalyptic number.

1212280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212280 is an abundant number, since it is smaller than the sum of its proper divisors (1515440).

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

1212280 is a wasteful number, since it uses less digits than its factorization.

1212280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30318 (or 30314 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1212280 is about 1101.0358758914. The cubic root of 1212280 is about 106.6271120701.

It can be divided in two parts, 121 and 2280, that added together give a 4-th power (2401 = 7⁴).

The spelling of 1212280 in words is "one million, two hundred twelve thousand, two hundred eighty".