1284085 has 16 divisors (see below), whose sum is σ = 1729152. Its totient is φ = 907200.

The previous prime is 1284083. The next prime is 1284131. The reversal of 1284085 is 5804821.

It is not a de Polignac number, because 1284085 - 2¹ = 1284083 is a prime.

It is a super-3 number, since 3×1284085³ = 6351884217333942375, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (108072).

2^1284085 is an apocalyptic number.

It is an amenable number.

1284085 is a deficient number, since it is larger than the sum of its proper divisors (445067).

1284085 is a wasteful number, since it uses less digits than its factorization.

1284085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684.

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

The square root of 1284085 is about 1133.1747438061. The cubic root of 1284085 is about 108.6920861323.

The spelling of 1284085 in words is "one million, two hundred eighty-four thousand, eighty-five".