100422 has 24 divisors (see below), whose sum is σ = 248976. Its totient is φ = 28656.

The previous prime is 100417. The next prime is 100447. The reversal of 100422 is 224001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273 + ... + 524.

It is an arithmetic number, because the mean of its divisors is an integer number (10374).

2¹⁰⁰⁴²² is an apocalyptic number.

100422 is an abundant number, since it is smaller than the sum of its proper divisors (148554).

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

100422 is a wasteful number, since it uses less digits than its factorization.

100422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 100422 is about 316.8943041457. The cubic root of 100422 is about 46.4810883901.

Adding to 100422 its reverse (224001), we get a palindrome (324423).

The spelling of 100422 in words is "one hundred thousand, four hundred twenty-two", and thus it is an iban number.