420410401 has 4 divisors (see below), whose sum is σ = 420491412. Its totient is φ = 420329392.

The previous prime is 420410381. The next prime is 420410413. The reversal of 420410401 is 104014024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 224970001 + 195440400 = 14999^2 + 13980^2 .

It is a cyclic number.

It is not a de Polignac number, because 420410401 - 2⁵ = 420410369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420410201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32146 + ... + 43291.

It is an arithmetic number, because the mean of its divisors is an integer number (105122853).

Almost surely, 2^420410401 is an apocalyptic number.

It is an amenable number.

420410401 is a deficient number, since it is larger than the sum of its proper divisors (81011).

420410401 is an equidigital number, since it uses as much as digits as its factorization.

420410401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81010.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 420410401 is about 20503.9118462795. The cubic root of 420410401 is about 749.1310831817.

Adding to 420410401 its reverse (104014024), we get a palindrome (524424425).

The spelling of 420410401 in words is "four hundred twenty million, four hundred ten thousand, four hundred one".