420304471 has 2 divisors, whose sum is σ = 420304472. Its totient is φ = 420304470.

The previous prime is 420304459. The next prime is 420304483. The reversal of 420304471 is 174403024.

It is a balanced prime because it is at equal distance from previous prime (420304459) and next prime (420304483).

It is a cyclic number.

It is not a de Polignac number, because 420304471 - 2⁵ = 420304439 is a prime.

It is a super-3 number, since 3×420304471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420304441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210152235 + 210152236.

It is an arithmetic number, because the mean of its divisors is an integer number (210152236).

Almost surely, 2^420304471 is an apocalyptic number.

420304471 is a deficient number, since it is larger than the sum of its proper divisors (1).

420304471 is an equidigital number, since it uses as much as digits as its factorization.

420304471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 420304471 is about 20501.3285179278. The cubic root of 420304471 is about 749.0681588571.

Adding to 420304471 its reverse (174403024), we get a palindrome (594707495).

The spelling of 420304471 in words is "four hundred twenty million, three hundred four thousand, four hundred seventy-one".