1320417 has 12 divisors (see below), whose sum is σ = 2179840. Its totient is φ = 754488.

The previous prime is 1320413. The next prime is 1320421. The reversal of 1320417 is 7140231.

It is an interprime number because it is at equal distance from previous prime (1320413) and next prime (1320421).

It is not a de Polignac number, because 1320417 - 2² = 1320413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320417.

It is not an unprimeable number, because it can be changed into a prime (1320413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10417 + ... + 10542.

2^1320417 is an apocalyptic number.

It is an amenable number.

1320417 is a deficient number, since it is larger than the sum of its proper divisors (859423).

1320417 is a wasteful number, since it uses less digits than its factorization.

1320417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20972 (or 20969 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1320417 is about 1149.0939909337. The cubic root of 1320417 is about 109.7076811675.

Adding to 1320417 its reverse (7140231), we get a palindrome (8460648).

The spelling of 1320417 in words is "one million, three hundred twenty thousand, four hundred seventeen".