1285458 has 8 divisors (see below), whose sum is σ = 2570928. Its totient is φ = 428484.

The previous prime is 1285451. The next prime is 1285469. The reversal of 1285458 is 8545821.

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

1285458 is an admirable number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1285451) 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 3 ways as a sum of consecutive naturals, for example, 107116 + ... + 107127.

It is an arithmetic number, because the mean of its divisors is an integer number (321366).

2^1285458 is an apocalyptic number.

1285458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285458 is a wasteful number, since it uses less digits than its factorization.

1285458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214248.

The product of its digits is 12800, while the sum is 33.

The square root of 1285458 is about 1133.7804020180. The cubic root of 1285458 is about 108.7308117817.

The spelling of 1285458 in words is "one million, two hundred eighty-five thousand, four hundred fifty-eight".