1282240 has 28 divisors (see below), whose sum is σ = 3054096. Its totient is φ = 512768.

The previous prime is 1282231. The next prime is 1282241. The reversal of 1282240 is 422821.

It is not an unprimeable number, because it can be changed into a prime (1282241) 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 3 ways as a sum of consecutive naturals, for example, 1684 + ... + 2323.

2^1282240 is an apocalyptic number.

1282240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1282240 is an abundant number, since it is smaller than the sum of its proper divisors (1771856).

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

1282240 is an equidigital number, since it uses as much as digits as its factorization.

1282240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024 (or 4014 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1282240 is about 1132.3603666678. The cubic root of 1282240 is about 108.6400041645.

The spelling of 1282240 in words is "one million, two hundred eighty-two thousand, two hundred forty".