1282081 has 2 divisors, whose sum is σ = 1282082. Its totient is φ = 1282080.

The previous prime is 1282079. The next prime is 1282093. The reversal of 1282081 is 1802821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 665856 + 616225 = 816^2 + 785^2 .

It is an emirp because it is prime and its reverse (1802821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1282081 - 2¹ = 1282079 is a prime.

It is a super-2 number, since 2×1282081² = 3287463381122, which contains 22 as substring.

Together with 1282079, it forms a pair of twin primes.

It is an Ulam number.

1282081 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1282031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641040 + 641041.

It is an arithmetic number, because the mean of its divisors is an integer number (641041).

2^1282081 is an apocalyptic number.

It is an amenable number.

1282081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282081 is an equidigital number, since it uses as much as digits as its factorization.

1282081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1282081 is about 1132.2901571594. The cubic root of 1282081 is about 108.6355134621.

It can be divided in two parts, 128 and 2081, that added together give a square (2209 = 47²).

The spelling of 1282081 in words is "one million, two hundred eighty-two thousand, eighty-one".