1281043 has 2 divisors, whose sum is σ = 1281044. Its totient is φ = 1281042.

The previous prime is 1281041. The next prime is 1281047. The reversal of 1281043 is 3401821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1281043 - 2¹ = 1281041 is a prime.

Together with 1281041, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1281043.

It is not a weakly prime, because it can be changed into another prime (1281041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640521 + 640522.

It is an arithmetic number, because the mean of its divisors is an integer number (640522).

2^1281043 is an apocalyptic number.

1281043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1281043 is an equidigital number, since it uses as much as digits as its factorization.

1281043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1281043 is about 1131.8317012701. The cubic root of 1281043 is about 108.6061876736.

Adding to 1281043 its reverse (3401821), we get a palindrome (4682864).

The spelling of 1281043 in words is "one million, two hundred eighty-one thousand, forty-three".