1286081 has 2 divisors, whose sum is σ = 1286082. Its totient is φ = 1286080.

The previous prime is 1286071. The next prime is 1286093. The reversal of 1286081 is 1806821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113025 + 173056 = 1055^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 1286081 - 2⁶ = 1286017 is a prime.

It is a super-4 number, since 4×1286081⁴ (a number of 26 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1286081.

It is not a weakly prime, because it can be changed into another prime (1286011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643040 + 643041.

It is an arithmetic number, because the mean of its divisors is an integer number (643041).

2^1286081 is an apocalyptic number.

It is an amenable number.

1286081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1286081 is an equidigital number, since it uses as much as digits as its factorization.

1286081 is an evil number, because the sum of its binary digits is even.

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

The square root of 1286081 is about 1134.0551132992. The cubic root of 1286081 is about 108.7483744858.

The spelling of 1286081 in words is "one million, two hundred eighty-six thousand, eighty-one".