180420211 has 6 divisors (see below), whose sum is σ = 188606180. Its totient is φ = 172575348.

The previous prime is 180420209. The next prime is 180420241. The reversal of 180420211 is 112024081.

It is a happy number.

It is not a de Polignac number, because 180420211 - 2¹ = 180420209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180420241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 170001 + ... + 171058.

Almost surely, 2^180420211 is an apocalyptic number.

180420211 is a deficient number, since it is larger than the sum of its proper divisors (8185969).

180420211 is an equidigital number, since it uses as much as digits as its factorization.

180420211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341105 (or 341082 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 180420211 is about 13432.0590752126. The cubic root of 180420211 is about 565.0606466343.

Adding to 180420211 its reverse (112024081), we get a palindrome (292444292).

The spelling of 180420211 in words is "one hundred eighty million, four hundred twenty thousand, two hundred eleven".