1245317 has 4 divisors (see below), whose sum is σ = 1310880. Its totient is φ = 1179756.

The previous prime is 1245281. The next prime is 1245331. The reversal of 1245317 is 7135421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7135421 = 29 ⋅246049.

It is a cyclic number.

It is not a de Polignac number, because 1245317 - 2¹⁰ = 1244293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1245292 and 1245301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32753 + ... + 32790.

It is an arithmetic number, because the mean of its divisors is an integer number (327720).

2^1245317 is an apocalyptic number.

It is an amenable number.

1245317 is a deficient number, since it is larger than the sum of its proper divisors (65563).

1245317 is an equidigital number, since it uses as much as digits as its factorization.

1245317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65562.

The product of its digits is 840, while the sum is 23.

The square root of 1245317 is about 1115.9377222767. The cubic root of 1245317 is about 107.5870432568.

The spelling of 1245317 in words is "one million, two hundred forty-five thousand, three hundred seventeen".