420162271 has 2 divisors, whose sum is σ = 420162272. Its totient is φ = 420162270.

The previous prime is 420162241. The next prime is 420162277. The reversal of 420162271 is 172261024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420162271 - 2⁹ = 420161759 is a prime.

It is equal to p_22352605 and since 420162271 and 22352605 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420162277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210081135 + 210081136.

It is an arithmetic number, because the mean of its divisors is an integer number (210081136).

Almost surely, 2^420162271 is an apocalyptic number.

420162271 is a deficient number, since it is larger than the sum of its proper divisors (1).

420162271 is an equidigital number, since it uses as much as digits as its factorization.

420162271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 420162271 is about 20497.8601566115. The cubic root of 420162271 is about 748.9836728758.

The spelling of 420162271 in words is "four hundred twenty million, one hundred sixty-two thousand, two hundred seventy-one".