420214471 has 2 divisors, whose sum is σ = 420214472. Its totient is φ = 420214470.

The previous prime is 420214409. The next prime is 420214477. The reversal of 420214471 is 174412024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420214471 - 2¹¹ = 420212423 is a prime.

It is a super-3 number, since 3×420214471³ (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 (420214477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210107235 + 210107236.

It is an arithmetic number, because the mean of its divisors is an integer number (210107236).

Almost surely, 2^420214471 is an apocalyptic number.

420214471 is a deficient number, since it is larger than the sum of its proper divisors (1).

420214471 is an equidigital number, since it uses as much as digits as its factorization.

420214471 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 420214471 is about 20499.1334207083. The cubic root of 420214471 is about 749.0146889311.

Adding to 420214471 its reverse (174412024), we get a palindrome (594626495).

The spelling of 420214471 in words is "four hundred twenty million, two hundred fourteen thousand, four hundred seventy-one".