100642223 has 4 divisors (see below), whose sum is σ = 109791528. Its totient is φ = 91492920.

The previous prime is 100642219. The next prime is 100642229. The reversal of 100642223 is 322246001.

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

It is a cyclic number.

It is not a de Polignac number, because 100642223 - 2² = 100642219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100642195 and 100642204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100642229) 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, 4574636 + ... + 4574657.

It is an arithmetic number, because the mean of its divisors is an integer number (27447882).

Almost surely, 2^100642223 is an apocalyptic number.

100642223 is a deficient number, since it is larger than the sum of its proper divisors (9149305).

100642223 is an equidigital number, since it uses as much as digits as its factorization.

100642223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9149304.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 100642223 is about 10032.0597585939. The cubic root of 100642223 is about 465.1504088145.

Adding to 100642223 its reverse (322246001), we get a palindrome (422888224).

The spelling of 100642223 in words is "one hundred million, six hundred forty-two thousand, two hundred twenty-three".