420525241 has 2 divisors, whose sum is σ = 420525242. Its totient is φ = 420525240.

The previous prime is 420525197. The next prime is 420525247. The reversal of 420525241 is 142525024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291043600 + 129481641 = 17060^2 + 11379^2 .

It is a cyclic number.

It is not a de Polignac number, because 420525241 - 2²⁷ = 286307513 is a prime.

It is not a weakly prime, because it can be changed into another prime (420525247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210262620 + 210262621.

It is an arithmetic number, because the mean of its divisors is an integer number (210262621).

Almost surely, 2^420525241 is an apocalyptic number.

It is an amenable number.

420525241 is a deficient number, since it is larger than the sum of its proper divisors (1).

420525241 is an equidigital number, since it uses as much as digits as its factorization.

420525241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 420525241 is about 20506.7120962869. The cubic root of 420525241 is about 749.1992882667.

The spelling of 420525241 in words is "four hundred twenty million, five hundred twenty-five thousand, two hundred forty-one".