421105401 has 6 divisors (see below), whose sum is σ = 608263370. Its totient is φ = 280736928.

The previous prime is 421105339. The next prime is 421105409. The reversal of 421105401 is 104501124.

It can be written as a sum of positive squares in only one way, i.e., 408848400 + 12257001 = 20220^2 + 3501^2 .

It is not a de Polignac number, because 421105401 - 2¹⁵ = 421072633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421105409) 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, 23394736 + ... + 23394753.

Almost surely, 2^421105401 is an apocalyptic number.

It is an amenable number.

421105401 is a deficient number, since it is larger than the sum of its proper divisors (187157969).

421105401 is a wasteful number, since it uses less digits than its factorization.

421105401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46789495 (or 46789492 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 421105401 is about 20520.8528331549. The cubic root of 421105401 is about 749.5436637326.

Adding to 421105401 its reverse (104501124), we get a palindrome (525606525).

The spelling of 421105401 in words is "four hundred twenty-one million, one hundred five thousand, four hundred one".