1285329 has 8 divisors (see below), whose sum is σ = 1719072. Its totient is φ = 854240.

The previous prime is 1285301. The next prime is 1285351. The reversal of 1285329 is 9235821.

It is a happy number.

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 1285329 - 2¹³ = 1277137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1285296 and 1285305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309 + ... + 2069.

It is an arithmetic number, because the mean of its divisors is an integer number (214884).

2^1285329 is an apocalyptic number.

It is an amenable number.

1285329 is a deficient number, since it is larger than the sum of its proper divisors (433743).

1285329 is an equidigital number, since it uses as much as digits as its factorization.

1285329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327.

The product of its digits is 4320, while the sum is 30.

The square root of 1285329 is about 1133.7235112672. The cubic root of 1285329 is about 108.7271744934.

The spelling of 1285329 in words is "one million, two hundred eighty-five thousand, three hundred twenty-nine".