100026 has 12 divisors (see below), whose sum is σ = 216762. Its totient is φ = 33336.

The previous prime is 100019. The next prime is 100043. The reversal of 100026 is 620001.

It can be written as a sum of positive squares in only one way, i.e., 62001 + 38025 = 249^2 + 195^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 99990 and 100017.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 100026.

It is an unprimeable number.

100026 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2761 + ... + 2796.

2¹⁰⁰⁰²⁶ is an apocalyptic number.

100026 is an abundant number, since it is smaller than the sum of its proper divisors (116736).

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

100026 is a wasteful number, since it uses less digits than its factorization.

100026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565 (or 5562 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 100026 is about 316.2688729546. The cubic root of 100026 is about 46.4199106979.

Adding to 100026 its reverse (620001), we get a palindrome (720027).

The spelling of 100026 in words is "one hundred thousand, twenty-six".