1421417 has 2 divisors, whose sum is σ = 1421418. Its totient is φ = 1421416.

The previous prime is 1421401. The next prime is 1421437. The reversal of 1421417 is 7141241.

It is an a-pointer prime, because the next prime (1421437) can be obtained adding 1421417 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1371241 + 50176 = 1171^2 + 224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421417 - 2⁴ = 1421401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1421437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710708 + 710709.

It is an arithmetic number, because the mean of its divisors is an integer number (710709).

2^1421417 is an apocalyptic number.

It is an amenable number.

1421417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421417 is an equidigital number, since it uses as much as digits as its factorization.

1421417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 20.

The square root of 1421417 is about 1192.2319405216. The cubic root of 1421417 is about 112.4364612401.

Adding to 1421417 its reverse (7141241), we get a palindrome (8562658).

The spelling of 1421417 in words is "one million, four hundred twenty-one thousand, four hundred seventeen".