422641417421 has 4 divisors (see below), whose sum is σ = 422650091232. Its totient is φ = 422632743612.

The previous prime is 422641417357. The next prime is 422641417427. The reversal of 422641417421 is 124714146224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 422641417421 - 2⁶ = 422641417357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422641417427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4263401 + ... + 4361406.

It is an arithmetic number, because the mean of its divisors is an integer number (105662522808).

Almost surely, 2^422641417421 is an apocalyptic number.

It is an amenable number.

422641417421 is a deficient number, since it is larger than the sum of its proper divisors (8673811).

422641417421 is an equidigital number, since it uses as much as digits as its factorization.

422641417421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8673810.

The product of its digits is 86016, while the sum is 38.

The spelling of 422641417421 in words is "four hundred twenty-two billion, six hundred forty-one million, four hundred seventeen thousand, four hundred twenty-one".