123822 has 16 divisors (see below), whose sum is σ = 275280. Its totient is φ = 41256.

The previous prime is 123821. The next prime is 123829. The reversal of 123822 is 228321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 123795 and 123804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123821) 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 7 ways as a sum of consecutive naturals, for example, 1093 + ... + 1200.

It is an arithmetic number, because the mean of its divisors is an integer number (17205).

2¹²³⁸²² is an apocalyptic number.

123822 is an abundant number, since it is smaller than the sum of its proper divisors (151458).

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

123822 is a wasteful number, since it uses less digits than its factorization.

123822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304 (or 2298 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 123822 is about 351.8835034497. The cubic root of 123822 is about 49.8424373350.

The spelling of 123822 in words is "one hundred twenty-three thousand, eight hundred twenty-two".