1281006 has 12 divisors (see below), whose sum is σ = 2775552. Its totient is φ = 426996.

The previous prime is 1280989. The next prime is 1281029. The reversal of 1281006 is 6001821.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 71167 = 1281006 / (1 + 2 + 8 + 1 + 0 + 0 + 6).

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1281006.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 35566 + ... + 35601.

It is an arithmetic number, because the mean of its divisors is an integer number (231296).

2^1281006 is an apocalyptic number.

1281006 is an abundant number, since it is smaller than the sum of its proper divisors (1494546).

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

1281006 is a wasteful number, since it uses less digits than its factorization.

1281006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71175 (or 71172 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1281006 is about 1131.8153559658. The cubic root of 1281006 is about 108.6051420497.

Adding to 1281006 its reverse (6001821), we get a palindrome (7282827).

It can be divided in two parts, 12 and 81006, that added together give a palindrome (81018).

The spelling of 1281006 in words is "one million, two hundred eighty-one thousand, six".