1321417 has 2 divisors, whose sum is σ = 1321418. Its totient is φ = 1321416.

The previous prime is 1321409. The next prime is 1321421. The reversal of 1321417 is 7141231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 698896 + 622521 = 836^2 + 789^2 .

It is an emirp because it is prime and its reverse (7141231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321417 - 2³ = 1321409 is a prime.

It is a super-2 number, since 2×1321417² = 3492285775778, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321394 and 1321403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660708 + 660709.

It is an arithmetic number, because the mean of its divisors is an integer number (660709).

2^1321417 is an apocalyptic number.

It is an amenable number.

1321417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321417 is an equidigital number, since it uses as much as digits as its factorization.

1321417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 19.

The square root of 1321417 is about 1149.5290339961. The cubic root of 1321417 is about 109.7353693896.

Adding to 1321417 its reverse (7141231), we get a palindrome (8462648).

It can be divided in two parts, 13214 and 17, that added together give a palindrome (13231).

The spelling of 1321417 in words is "one million, three hundred twenty-one thousand, four hundred seventeen".