420041161 has 2 divisors, whose sum is σ = 420041162. Its totient is φ = 420041160.

The previous prime is 420041159. The next prime is 420041177. The reversal of 420041161 is 161140024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392792761 + 27248400 = 19819^2 + 5220^2 .

It is a cyclic number.

It is not a de Polignac number, because 420041161 - 2¹ = 420041159 is a prime.

Together with 420041159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (420041861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210020580 + 210020581.

It is an arithmetic number, because the mean of its divisors is an integer number (210020581).

Almost surely, 2^420041161 is an apocalyptic number.

It is an amenable number.

420041161 is a deficient number, since it is larger than the sum of its proper divisors (1).

420041161 is an equidigital number, since it uses as much as digits as its factorization.

420041161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 420041161 is about 20494.9057328888. The cubic root of 420041161 is about 748.9117021669.

Adding to 420041161 its reverse (161140024), we get a palindrome (581181185).

The spelling of 420041161 in words is "four hundred twenty million, forty-one thousand, one hundred sixty-one".