100004421 has 16 divisors (see below), whose sum is σ = 154018368. Its totient is φ = 57043200.

The previous prime is 100004417. The next prime is 100004449. The reversal of 100004421 is 124400001.

It is not a de Polignac number, because 100004421 - 2² = 100004417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100004397 and 100004406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100004461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88570 + ... + 89691.

It is an arithmetic number, because the mean of its divisors is an integer number (9626148).

Almost surely, 2^100004421 is an apocalyptic number.

100004421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100004421 is a deficient number, since it is larger than the sum of its proper divisors (54013947).

100004421 is a wasteful number, since it uses less digits than its factorization.

100004421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178292.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 100004421 is about 10000.2210475569. The cubic root of 100004421 is about 464.1657234152.

Adding to 100004421 its reverse (124400001), we get a palindrome (224404422).

The spelling of 100004421 in words is "one hundred million, four thousand, four hundred twenty-one".