422442405 has 64 divisors (see below), whose sum is σ = 936345600. Its totient is φ = 175556160.

The previous prime is 422442379. The next prime is 422442407. The reversal of 422442405 is 504244224.

It is not a de Polignac number, because 422442405 - 2⁶ = 422442341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422442407) 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 63 ways as a sum of consecutive naturals, for example, 9925 + ... + 30714.

It is an arithmetic number, because the mean of its divisors is an integer number (14630400).

Almost surely, 2^422442405 is an apocalyptic number.

422442405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

422442405 is an abundant number, since it is smaller than the sum of its proper divisors (513903195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422442405 is a wasteful number, since it uses less digits than its factorization.

422442405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40671 (or 40665 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 422442405 is about 20553.4037327154. The cubic root of 422442405 is about 750.3360893694.

Adding to 422442405 its reverse (504244224), we get a palindrome (926686629).

The spelling of 422442405 in words is "four hundred twenty-two million, four hundred forty-two thousand, four hundred five".