420090241 has 2 divisors, whose sum is σ = 420090242. Its totient is φ = 420090240.

The previous prime is 420090221. The next prime is 420090289. The reversal of 420090241 is 142090024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420086016 + 4225 = 20496^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 420090241 - 2¹³ = 420082049 is a prime.

It is not a weakly prime, because it can be changed into another prime (420090221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210045120 + 210045121.

It is an arithmetic number, because the mean of its divisors is an integer number (210045121).

Almost surely, 2^420090241 is an apocalyptic number.

It is an amenable number.

420090241 is a deficient number, since it is larger than the sum of its proper divisors (1).

420090241 is an equidigital number, since it uses as much as digits as its factorization.

420090241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 420090241 is about 20496.1030686323. The cubic root of 420090241 is about 748.9408700661.

The spelling of 420090241 in words is "four hundred twenty million, ninety thousand, two hundred forty-one".