1248805 has 8 divisors (see below), whose sum is σ = 1504800. Its totient is φ = 994896.

The previous prime is 1248799. The next prime is 1248809. The reversal of 1248805 is 5088421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1248805 - 2¹¹ = 1246757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1566 + ... + 2224.

It is an arithmetic number, because the mean of its divisors is an integer number (188100).

2^1248805 is an apocalyptic number.

It is an amenable number.

1248805 is a deficient number, since it is larger than the sum of its proper divisors (255995).

1248805 is an equidigital number, since it uses as much as digits as its factorization.

1248805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 1248805 is about 1117.4994407157. The cubic root of 1248805 is about 107.6873962307.

The spelling of 1248805 in words is "one million, two hundred forty-eight thousand, eight hundred five".