1282985 has 8 divisors (see below), whose sum is σ = 1679616. Its totient is φ = 933040.

The previous prime is 1282969. The next prime is 1282993. The reversal of 1282985 is 5892821.

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

It is not a de Polignac number, because 1282985 - 2⁴ = 1282969 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

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 7 ways as a sum of consecutive naturals, for example, 11609 + ... + 11718.

It is an arithmetic number, because the mean of its divisors is an integer number (209952).

2^1282985 is an apocalyptic number.

It is an amenable number.

1282985 is a deficient number, since it is larger than the sum of its proper divisors (396631).

1282985 is a wasteful number, since it uses less digits than its factorization.

1282985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23343.

The product of its digits is 11520, while the sum is 35.

The square root of 1282985 is about 1132.6892777810. The cubic root of 1282985 is about 108.6610405625.

It can be divided in two parts, 128 and 2985, that added together give a palindrome (3113).

The spelling of 1282985 in words is "one million, two hundred eighty-two thousand, nine hundred eighty-five".