1227871 has 2 divisors, whose sum is σ = 1227872. Its totient is φ = 1227870.

The previous prime is 1227847. The next prime is 1227881. The reversal of 1227871 is 1787221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1227871 - 2¹³ = 1219679 is a prime.

It is a Chen prime.

1227871 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1227841) 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 as a sum of consecutive naturals, namely, 613935 + 613936.

It is an arithmetic number, because the mean of its divisors is an integer number (613936).

2^1227871 is an apocalyptic number.

1227871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227871 is an equidigital number, since it uses as much as digits as its factorization.

1227871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 28.

The square root of 1227871 is about 1108.0934076151. The cubic root of 1227871 is about 107.0822728812.

The spelling of 1227871 in words is "one million, two hundred twenty-seven thousand, eight hundred seventy-one".