422381 has 4 divisors (see below), whose sum is σ = 429600. Its totient is φ = 415164.

The previous prime is 422377. The next prime is 422393. The reversal of 422381 is 183224.

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 422381 - 2² = 422377 is a prime.

It is a super-2 number, since 2×422381² = 356811418322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422311) 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, 3521 + ... + 3638.

It is an arithmetic number, because the mean of its divisors is an integer number (107400).

2⁴²²³⁸¹ is an apocalyptic number.

It is an amenable number.

422381 is a deficient number, since it is larger than the sum of its proper divisors (7219).

422381 is an equidigital number, since it uses as much as digits as its factorization.

422381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7218.

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

The square root of 422381 is about 649.9084550919. The cubic root of 422381 is about 75.0299732050.

The spelling of 422381 in words is "four hundred twenty-two thousand, three hundred eighty-one".