1284105 has 8 divisors (see below), whose sum is σ = 2054592. Its totient is φ = 684848.

The previous prime is 1284083. The next prime is 1284131. The reversal of 1284105 is 5014821.

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 1284105 - 2¹⁸ = 1021961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42789 + ... + 42818.

It is an arithmetic number, because the mean of its divisors is an integer number (256824).

2^1284105 is an apocalyptic number.

1284105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1284105 is a deficient number, since it is larger than the sum of its proper divisors (770487).

1284105 is an equidigital number, since it uses as much as digits as its factorization.

1284105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85615.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1284105 is about 1133.1835685360. The cubic root of 1284105 is about 108.6926504330.

Adding to 1284105 its reverse (5014821), we get a palindrome (6298926).

The spelling of 1284105 in words is "one million, two hundred eighty-four thousand, one hundred five".