1281086 has 16 divisors (see below), whose sum is σ = 2086560. Its totient is φ = 587520.

The previous prime is 1281083. The next prime is 1281089. The reversal of 1281086 is 6801821.

It is an interprime number because it is at equal distance from previous prime (1281083) and next prime (1281089).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935 + ... + 1853.

It is an arithmetic number, because the mean of its divisors is an integer number (130410).

2^1281086 is an apocalyptic number.

1281086 is a deficient number, since it is larger than the sum of its proper divisors (805474).

1281086 is a wasteful number, since it uses less digits than its factorization.

1281086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1281086 is about 1131.8506968677. The cubic root of 1281086 is about 108.6074028329.

The spelling of 1281086 in words is "one million, two hundred eighty-one thousand, eighty-six".