1284475 has 12 divisors (see below), whose sum is σ = 1607040. Its totient is φ = 1018400.

The previous prime is 1284473. The next prime is 1284487. The reversal of 1284475 is 5744821.

It is not a de Polignac number, because 1284475 - 2¹ = 1284473 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1284473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4641 + ... + 4909.

It is an arithmetic number, because the mean of its divisors is an integer number (133920).

2^1284475 is an apocalyptic number.

1284475 is a deficient number, since it is larger than the sum of its proper divisors (322565).

1284475 is a wasteful number, since it uses less digits than its factorization.

1284475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 465 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 1284475 is about 1133.3468136453. The cubic root of 1284475 is about 108.7030889405.

The spelling of 1284475 in words is "one million, two hundred eighty-four thousand, four hundred seventy-five".