1285267 has 2 divisors, whose sum is σ = 1285268. Its totient is φ = 1285266.

The previous prime is 1285259. The next prime is 1285279. The reversal of 1285267 is 7625821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1285267 - 2³ = 1285259 is a prime.

It is a super-2 number, since 2×1285267² = 3303822522578, which contains 22 as substring.

1285267 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1285237) 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 as a sum of consecutive naturals, namely, 642633 + 642634.

It is an arithmetic number, because the mean of its divisors is an integer number (642634).

2^1285267 is an apocalyptic number.

1285267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285267 is an equidigital number, since it uses as much as digits as its factorization.

1285267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 1285267 is about 1133.6961674099. The cubic root of 1285267 is about 108.7254262528.

The spelling of 1285267 in words is "one million, two hundred eighty-five thousand, two hundred sixty-seven".