420217011 has 8 divisors (see below), whose sum is σ = 622543760. Its totient is φ = 280144656.

The previous prime is 420217009. The next prime is 420217043. The reversal of 420217011 is 110712024.

It is not a de Polignac number, because 420217011 - 2¹ = 420217009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420217001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7781770 + ... + 7781823.

It is an arithmetic number, because the mean of its divisors is an integer number (77817970).

Almost surely, 2^420217011 is an apocalyptic number.

420217011 is a deficient number, since it is larger than the sum of its proper divisors (202326749).

420217011 is a wasteful number, since it uses less digits than its factorization.

420217011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15563602 (or 15563596 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 420217011 is about 20499.1953744531. The cubic root of 420217011 is about 749.0161980760.

Adding to 420217011 its reverse (110712024), we get a palindrome (530929035).

The spelling of 420217011 in words is "four hundred twenty million, two hundred seventeen thousand, eleven".