1288117 has 2 divisors, whose sum is σ = 1288118.
Its totient is φ = 1288116.
The previous prime is 1288109. The next prime is 1288163. The reversal of 1288117 is 7118821.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 844561 + 443556 = 919^2 + 666^2
It is a cyclic number.
It is not a de Polignac number, because 1288117 - 23 = 1288109 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1288187) 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, 644058 + 644059.
It is an arithmetic number, because the mean of its divisors is an integer number (644059).
21288117 is an apocalyptic number.
It is an amenable number.
1288117 is a deficient number, since it is larger than the sum of its proper divisors (1).
1288117 is an equidigital number, since it uses as much as digits as its factorization.
1288117 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 896, while the sum is 28.
The square root of 1288117 is about 1134.9524219103.
The cubic root of 1288117 is about 108.8057308923.
The spelling of 1288117 in words is "one million, two hundred eighty-eight thousand, one hundred seventeen".