421422 has 8 divisors (see below), whose sum is σ = 842856. Its totient is φ = 140472.

The previous prime is 421417. The next prime is 421423. The reversal of 421422 is 224124.

It is a sphenic number, since it is the product of 3 distinct primes.

421422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35113 + ... + 35124.

It is an arithmetic number, because the mean of its divisors is an integer number (105357).

2⁴²¹⁴²² is an apocalyptic number.

421422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

421422 is a wasteful number, since it uses less digits than its factorization.

421422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70242.

The product of its digits is 128, while the sum is 15.

The square root of 421422 is about 649.1702396136. The cubic root of 421422 is about 74.9731459415.

Adding to 421422 its reverse (224124), we get a palindrome (645546).

The spelling of 421422 in words is "four hundred twenty-one thousand, four hundred twenty-two", and thus it is an iban number.