420130171 has 2 divisors, whose sum is σ = 420130172. Its totient is φ = 420130170.

The previous prime is 420130103. The next prime is 420130177. The reversal of 420130171 is 171031024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420130171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420130177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210065085 + 210065086.

It is an arithmetic number, because the mean of its divisors is an integer number (210065086).

Almost surely, 2^420130171 is an apocalyptic number.

420130171 is a deficient number, since it is larger than the sum of its proper divisors (1).

420130171 is an equidigital number, since it uses as much as digits as its factorization.

420130171 is an evil number, because the sum of its binary digits is even.

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

The square root of 420130171 is about 20497.0771330939. The cubic root of 420130171 is about 748.9645985087.

Adding to 420130171 its reverse (171031024), we get a palindrome (591161195).

The spelling of 420130171 in words is "four hundred twenty million, one hundred thirty thousand, one hundred seventy-one".