1281472 has 14 divisors (see below), whose sum is σ = 2543048. Its totient is φ = 640704.

The previous prime is 1281463. The next prime is 1281503. The reversal of 1281472 is 2741821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9948 + ... + 10075.

2^1281472 is an apocalyptic number.

It is an amenable number.

1281472 is a deficient number, since it is larger than the sum of its proper divisors (1261576).

1281472 is an equidigital number, since it uses as much as digits as its factorization.

1281472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20035 (or 20025 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 1281472 is about 1132.0212012149. The cubic root of 1281472 is about 108.6183097894.

It can be divided in two parts, 128 and 1472, that added together give a square (1600 = 40²).

The spelling of 1281472 in words is "one million, two hundred eighty-one thousand, four hundred seventy-two".