1284955 has 8 divisors (see below), whose sum is σ = 1762272. Its totient is φ = 881088.

The previous prime is 1284937. The next prime is 1284967. The reversal of 1284955 is 5594821.

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

It is a cyclic number.

It is not a de Polignac number, because 1284955 - 2⁹ = 1284443 is a prime.

It is a super-2 number, since 2×1284955² = 3302218704050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1284955.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18322 + ... + 18391.

It is an arithmetic number, because the mean of its divisors is an integer number (220284).

2^1284955 is an apocalyptic number.

1284955 is a deficient number, since it is larger than the sum of its proper divisors (477317).

1284955 is an equidigital number, since it uses as much as digits as its factorization.

1284955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36725.

The product of its digits is 14400, while the sum is 34.

The square root of 1284955 is about 1133.5585560526. The cubic root of 1284955 is about 108.7166278012.

The spelling of 1284955 in words is "one million, two hundred eighty-four thousand, nine hundred fifty-five".