420241417 has 2 divisors, whose sum is σ = 420241418. Its totient is φ = 420241416.

The previous prime is 420241397. The next prime is 420241427. The reversal of 420241417 is 714142024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293813881 + 126427536 = 17141^2 + 11244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420241417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420241391 and 420241400.

It is not a weakly prime, because it can be changed into another prime (420241427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210120708 + 210120709.

It is an arithmetic number, because the mean of its divisors is an integer number (210120709).

Almost surely, 2^420241417 is an apocalyptic number.

It is an amenable number.

420241417 is a deficient number, since it is larger than the sum of its proper divisors (1).

420241417 is an equidigital number, since it uses as much as digits as its factorization.

420241417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 420241417 is about 20499.7906574677. The cubic root of 420241417 is about 749.0306986276.

The spelling of 420241417 in words is "four hundred twenty million, two hundred forty-one thousand, four hundred seventeen".