1306081 has 4 divisors (see below), whose sum is σ = 1492672. Its totient is φ = 1119492.

The previous prime is 1306069. The next prime is 1306087. The reversal of 1306081 is 1806031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1306081 - 2¹¹ = 1304033 is a prime.

It is a super-3 number, since 3×1306081³ = 6683925333763588323, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306087) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 93285 + ... + 93298.

It is an arithmetic number, because the mean of its divisors is an integer number (373168).

2^1306081 is an apocalyptic number.

It is an amenable number.

1306081 is a deficient number, since it is larger than the sum of its proper divisors (186591).

1306081 is an equidigital number, since it uses as much as digits as its factorization.

1306081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186590.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1306081 is about 1142.8390087847. The cubic root of 1306081 is about 109.3091969905.

The spelling of 1306081 in words is "one million, three hundred six thousand, eighty-one".