422138 has 8 divisors (see below), whose sum is σ = 641088. Its totient is φ = 208444.

The previous prime is 422137. The next prime is 422141. The reversal of 422138 is 831224.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422138.

It is not an unprimeable number, because it can be changed into a prime (422137) 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, 1106 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (80136).

2⁴²²¹³⁸ is an apocalyptic number.

422138 is a deficient number, since it is larger than the sum of its proper divisors (218950).

422138 is a wasteful number, since it uses less digits than its factorization.

422138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628.

The product of its digits is 384, while the sum is 20.

The square root of 422138 is about 649.7214787892. The cubic root of 422138 is about 75.0155819477.

The spelling of 422138 in words is "four hundred twenty-two thousand, one hundred thirty-eight".