4321420405 has 16 divisors (see below), whose sum is σ = 5318083584. Its totient is φ = 3369496320.

The previous prime is 4321420399. The next prime is 4321420409. The reversal of 4321420405 is 5040241234.

It is a happy number.

It is not a de Polignac number, because 4321420405 - 2⁵ = 4321420373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4321420405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321420409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18484 + ... + 94786.

It is an arithmetic number, because the mean of its divisors is an integer number (332380224).

Almost surely, 2^4321420405 is an apocalyptic number.

It is an amenable number.

4321420405 is a deficient number, since it is larger than the sum of its proper divisors (996663179).

4321420405 is a wasteful number, since it uses less digits than its factorization.

4321420405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76596.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 4321420405 is about 65737.5113995046. The cubic root of 4321420405 is about 1628.8290491173.

Adding to 4321420405 its reverse (5040241234), we get a palindrome (9361661639).

The spelling of 4321420405 in words is "four billion, three hundred twenty-one million, four hundred twenty thousand, four hundred five".