100020423 has 4 divisors (see below), whose sum is σ = 133360568. Its totient is φ = 66680280.

The previous prime is 100020413. The next prime is 100020457. The reversal of 100020423 is 324020001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 100020423 - 2⁹ = 100019911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020399 and 100020408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16670068 + ... + 16670073.

It is an arithmetic number, because the mean of its divisors is an integer number (33340142).

Almost surely, 2^100020423 is an apocalyptic number.

100020423 is a deficient number, since it is larger than the sum of its proper divisors (33340145).

100020423 is an equidigital number, since it uses as much as digits as its factorization.

100020423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33340144.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 100020423 is about 10001.0210978680. The cubic root of 100020423 is about 464.1904796000.

Adding to 100020423 its reverse (324020001), we get a palindrome (424040424).

The spelling of 100020423 in words is "one hundred million, twenty thousand, four hundred twenty-three".