100130421 has 4 divisors (see below), whose sum is σ = 133507232. Its totient is φ = 66753612.

The previous prime is 100130419. The next prime is 100130441. The reversal of 100130421 is 124031001.

It is a happy number.

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: 124031001 = 3 ⋅41343667.

It is not a de Polignac number, because 100130421 - 2¹ = 100130419 is a prime.

It is a super-2 number, since 2×100130421² = 20052202419274482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100130397 and 100130406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100130441) 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, 16688401 + ... + 16688406.

It is an arithmetic number, because the mean of its divisors is an integer number (33376808).

Almost surely, 2^100130421 is an apocalyptic number.

It is an amenable number.

100130421 is a deficient number, since it is larger than the sum of its proper divisors (33376811).

100130421 is an equidigital number, since it uses as much as digits as its factorization.

100130421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33376810.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 100130421 is about 10006.5189251807. The cubic root of 100130421 is about 464.3605825864.

Adding to 100130421 its reverse (124031001), we get a palindrome (224161422).

The spelling of 100130421 in words is "one hundred million, one hundred thirty thousand, four hundred twenty-one".