1284875 has 16 divisors (see below), whose sum is σ = 1691040. Its totient is φ = 972000.

The previous prime is 1284863. The next prime is 1284889. The reversal of 1284875 is 5784821.

It is a de Polignac number, because none of the positive numbers 2^k-1284875 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 2105 + ... + 2645.

It is an arithmetic number, because the mean of its divisors is an integer number (105690).

2^1284875 is an apocalyptic number.

1284875 is a deficient number, since it is larger than the sum of its proper divisors (406165).

1284875 is an equidigital number, since it uses as much as digits as its factorization.

1284875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 565 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 1284875 is about 1133.5232683981. The cubic root of 1284875 is about 108.7143715586.

The spelling of 1284875 in words is "one million, two hundred eighty-four thousand, eight hundred seventy-five".