100424 has 8 divisors (see below), whose sum is σ = 188310. Its totient is φ = 50208.

The previous prime is 100417. The next prime is 100447. The reversal of 100424 is 424001.

It can be written as a sum of positive squares in only one way, i.e., 52900 + 47524 = 230^2 + 218^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6269 + ... + 6284.

2¹⁰⁰⁴²⁴ is an apocalyptic number.

It is an amenable number.

100424 is a deficient number, since it is larger than the sum of its proper divisors (87886).

100424 is a wasteful number, since it uses less digits than its factorization.

100424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12559 (or 12555 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 100424 is about 316.8974597563. The cubic root of 100424 is about 46.4813969598.

Adding to 100424 its reverse (424001), we get a palindrome (524425).

The spelling of 100424 in words is "one hundred thousand, four hundred twenty-four", and thus it is an iban number.