420404411 has 4 divisors (see below), whose sum is σ = 480462192. Its totient is φ = 360346632.

The previous prime is 420404401. The next prime is 420404461. The reversal of 420404411 is 114404024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420404411 - 2²² = 416210107 is a prime.

It is a super-3 number, since 3×420404411³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (420404401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30028880 + ... + 30028893.

It is an arithmetic number, because the mean of its divisors is an integer number (120115548).

Almost surely, 2^420404411 is an apocalyptic number.

420404411 is a deficient number, since it is larger than the sum of its proper divisors (60057781).

420404411 is an equidigital number, since it uses as much as digits as its factorization.

420404411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60057780.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 420404411 is about 20503.7657760715. The cubic root of 420404411 is about 749.1275252959.

Adding to 420404411 its reverse (114404024), we get a palindrome (534808435).

The spelling of 420404411 in words is "four hundred twenty million, four hundred four thousand, four hundred eleven".