1286315 has 4 divisors (see below), whose sum is σ = 1543584. Its totient is φ = 1029048.

The previous prime is 1286303. The next prime is 1286323. The reversal of 1286315 is 5136821.

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 1286315 - 2¹⁸ = 1024171 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128627 + ... + 128636.

It is an arithmetic number, because the mean of its divisors is an integer number (385896).

2^1286315 is an apocalyptic number.

1286315 is a deficient number, since it is larger than the sum of its proper divisors (257269).

1286315 is an equidigital number, since it uses as much as digits as its factorization.

1286315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257268.

The product of its digits is 1440, while the sum is 26.

The square root of 1286315 is about 1134.1582781958. The cubic root of 1286315 is about 108.7549696060.

The spelling of 1286315 in words is "one million, two hundred eighty-six thousand, three hundred fifteen".