422438 has 4 divisors (see below), whose sum is σ = 633660. Its totient is φ = 211218.

The previous prime is 422431. The next prime is 422453. The reversal of 422438 is 834224.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105608 + ... + 105611.

It is an arithmetic number, because the mean of its divisors is an integer number (158415).

2⁴²²⁴³⁸ is an apocalyptic number.

422438 is a deficient number, since it is larger than the sum of its proper divisors (211222).

422438 is a wasteful number, since it uses less digits than its factorization.

422438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211221.

The product of its digits is 1536, while the sum is 23.

The square root of 422438 is about 649.9523059425. The cubic root of 422438 is about 75.0333481328.

The spelling of 422438 in words is "four hundred twenty-two thousand, four hundred thirty-eight".