1245285 has 12 divisors (see below), whose sum is σ = 2158572. Its totient is φ = 664128.

The previous prime is 1245281. The next prime is 1245331. The reversal of 1245285 is 5825421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 161604 + 1083681 = 402^2 + 1041^2 .

It is not a de Polignac number, because 1245285 - 2² = 1245281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13792 + ... + 13881.

It is an arithmetic number, because the mean of its divisors is an integer number (179881).

2^1245285 is an apocalyptic number.

1245285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245285 is a deficient number, since it is larger than the sum of its proper divisors (913287).

1245285 is a wasteful number, since it uses less digits than its factorization.

1245285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27684 (or 27681 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1245285 is about 1115.9233844669. The cubic root of 1245285 is about 107.5861217204.

The spelling of 1245285 in words is "one million, two hundred forty-five thousand, two hundred eighty-five".