100420230421 has 4 divisors (see below), whose sum is σ = 114765977632. Its totient is φ = 86074483212.

The previous prime is 100420230389. The next prime is 100420230431. The reversal of 100420230421 is 124032024001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124032024001 = 2437 ⋅50895373.

It is a cyclic number.

It is not a de Polignac number, because 100420230421 - 2⁵ = 100420230389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100420230431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7172873595 + ... + 7172873608.

It is an arithmetic number, because the mean of its divisors is an integer number (28691494408).

Almost surely, 2^100420230421 is an apocalyptic number.

It is an amenable number.

100420230421 is a deficient number, since it is larger than the sum of its proper divisors (14345747211).

100420230421 is an equidigital number, since it uses as much as digits as its factorization.

100420230421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14345747210.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 100420230421 its reverse (124032024001), we get a palindrome (224452254422).

The spelling of 100420230421 in words is "one hundred billion, four hundred twenty million, two hundred thirty thousand, four hundred twenty-one".