1287295 has 4 divisors (see below), whose sum is σ = 1544760. Its totient is φ = 1029832.

The previous prime is 1287289. The next prime is 1287323. The reversal of 1287295 is 5927821.

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

It is a cyclic number.

It is not a de Polignac number, because 1287295 - 2⁹ = 1286783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1287295.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 128725 + ... + 128734.

It is an arithmetic number, because the mean of its divisors is an integer number (386190).

2^1287295 is an apocalyptic number.

1287295 is a deficient number, since it is larger than the sum of its proper divisors (257465).

1287295 is an equidigital number, since it uses as much as digits as its factorization.

1287295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257464.

The product of its digits is 10080, while the sum is 34.

The square root of 1287295 is about 1134.5902344018. The cubic root of 1287295 is about 108.7825815090.

It can be divided in two parts, 1 and 287295, that added together give a square (287296 = 536²).

The spelling of 1287295 in words is "one million, two hundred eighty-seven thousand, two hundred ninety-five".