420130177 has 2 divisors, whose sum is σ = 420130178. Its totient is φ = 420130176.

The previous prime is 420130171. The next prime is 420130181. The reversal of 420130177 is 771031024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412861761 + 7268416 = 20319^2 + 2696^2 .

It is a cyclic number.

It is not a de Polignac number, because 420130177 - 2¹¹ = 420128129 is a prime.

It is not a weakly prime, because it can be changed into another prime (420130171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210065088 + 210065089.

It is an arithmetic number, because the mean of its divisors is an integer number (210065089).

Almost surely, 2^420130177 is an apocalyptic number.

It is an amenable number.

420130177 is a deficient number, since it is larger than the sum of its proper divisors (1).

420130177 is an equidigital number, since it uses as much as digits as its factorization.

420130177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 420130177 is about 20497.0772794562. The cubic root of 420130177 is about 748.9646020741.

The spelling of 420130177 in words is "four hundred twenty million, one hundred thirty thousand, one hundred seventy-seven".