181422 has 12 divisors (see below), whose sum is σ = 393120. Its totient is φ = 60468.

The previous prime is 181421. The next prime is 181439. The reversal of 181422 is 224181.

181422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 10079 = 181422 / (1 + 8 + 1 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 181395 and 181404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5022 + ... + 5057.

It is an arithmetic number, because the mean of its divisors is an integer number (32760).

2¹⁸¹⁴²² is an apocalyptic number.

181422 is an abundant number, since it is smaller than the sum of its proper divisors (211698).

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

181422 is a wasteful number, since it uses less digits than its factorization.

181422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10087 (or 10084 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 181422 is about 425.9366150027. The cubic root of 181422 is about 56.6104556011.

The spelling of 181422 in words is "one hundred eighty-one thousand, four hundred twenty-two".