1307245 has 8 divisors (see below), whose sum is σ = 1598616. Its totient is φ = 1025856.

The previous prime is 1307221. The next prime is 1307261. The reversal of 1307245 is 5427031.

It can be written as a sum of positive squares in 4 ways, for example, as 145161 + 1162084 = 381^2 + 1078^2 .

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 1307245 - 2⁹ = 1306733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2202 + ... + 2731.

It is an arithmetic number, because the mean of its divisors is an integer number (199827).

2^1307245 is an apocalyptic number.

It is an amenable number.

1307245 is a deficient number, since it is larger than the sum of its proper divisors (291371).

1307245 is an equidigital number, since it uses as much as digits as its factorization.

1307245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4991.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 1307245 is about 1143.3481534511. The cubic root of 1307245 is about 109.3416600423.

The spelling of 1307245 in words is "one million, three hundred seven thousand, two hundred forty-five".