1281248 has 12 divisors (see below), whose sum is σ = 2522520. Its totient is φ = 640608.

The previous prime is 1281229. The next prime is 1281253. The reversal of 1281248 is 8421821.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

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, 19988 + ... + 20051.

It is an arithmetic number, because the mean of its divisors is an integer number (210210).

2^1281248 is an apocalyptic number.

It is an amenable number.

1281248 is a deficient number, since it is larger than the sum of its proper divisors (1241272).

1281248 is an equidigital number, since it uses as much as digits as its factorization.

1281248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40049 (or 40041 counting only the distinct ones).

The product of its digits is 1024, while the sum is 26.

The square root of 1281248 is about 1131.9222588146. The cubic root of 1281248 is about 108.6119806306.

The spelling of 1281248 in words is "one million, two hundred eighty-one thousand, two hundred forty-eight".