1288127 has 4 divisors (see below), whose sum is σ = 1294800. Its totient is φ = 1281456.

The previous prime is 1288117. The next prime is 1288163. The reversal of 1288127 is 7218821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1288127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3038 + ... + 3435.

It is an arithmetic number, because the mean of its divisors is an integer number (323700).

2^1288127 is an apocalyptic number.

1288127 is a deficient number, since it is larger than the sum of its proper divisors (6673).

1288127 is an equidigital number, since it uses as much as digits as its factorization.

1288127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6672.

The product of its digits is 1792, while the sum is 29.

The square root of 1288127 is about 1134.9568273727. The cubic root of 1288127 is about 108.8060124543.

The spelling of 1288127 in words is "one million, two hundred eighty-eight thousand, one hundred twenty-seven".