1284854 has 4 divisors (see below), whose sum is σ = 1927284. Its totient is φ = 642426.

The previous prime is 1284851. The next prime is 1284863. The reversal of 1284854 is 4584821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4584821 = 61 ⋅75161.

It is a self number, because there is not a number n which added to its sum of digits gives 1284854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284851) 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 as a sum of consecutive naturals, namely, 321212 + ... + 321215.

It is an arithmetic number, because the mean of its divisors is an integer number (481821).

2^1284854 is an apocalyptic number.

1284854 is a deficient number, since it is larger than the sum of its proper divisors (642430).

1284854 is an equidigital number, since it uses as much as digits as its factorization.

1284854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642429.

The product of its digits is 10240, while the sum is 32.

The square root of 1284854 is about 1133.5140052068. The cubic root of 1284854 is about 108.7137792794.

The spelling of 1284854 in words is "one million, two hundred eighty-four thousand, eight hundred fifty-four".