1285493 has 8 divisors (see below), whose sum is σ = 1463616. Its totient is φ = 1117600.

The previous prime is 1285481. The next prime is 1285507. The reversal of 1285493 is 3945821.

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

It is not a de Polignac number, because 1285493 - 2⁶ = 1285429 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285393) 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 in 7 ways as a sum of consecutive naturals, for example, 2288 + ... + 2793.

It is an arithmetic number, because the mean of its divisors is an integer number (182952).

2^1285493 is an apocalyptic number.

It is an amenable number.

1285493 is a deficient number, since it is larger than the sum of its proper divisors (178123).

1285493 is a wasteful number, since it uses less digits than its factorization.

1285493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115.

The product of its digits is 8640, while the sum is 32.

The square root of 1285493 is about 1133.7958370006. The cubic root of 1285493 is about 108.7317986009.

The spelling of 1285493 in words is "one million, two hundred eighty-five thousand, four hundred ninety-three".