1248815 has 4 divisors (see below), whose sum is σ = 1498584. Its totient is φ = 999048.

The previous prime is 1248809. The next prime is 1248829. The reversal of 1248815 is 5188421.

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 1248815 - 2⁴ = 1248799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124877 + ... + 124886.

It is an arithmetic number, because the mean of its divisors is an integer number (374646).

2^1248815 is an apocalyptic number.

1248815 is a deficient number, since it is larger than the sum of its proper divisors (249769).

1248815 is an equidigital number, since it uses as much as digits as its factorization.

1248815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249768.

The product of its digits is 2560, while the sum is 29.

The square root of 1248815 is about 1117.5039149820. The cubic root of 1248815 is about 107.6876836712.

The spelling of 1248815 in words is "one million, two hundred forty-eight thousand, eight hundred fifteen".