100013421 has 8 divisors (see below), whose sum is σ = 133406560. Its totient is φ = 66647952.

The previous prime is 100013387. The next prime is 100013443. The reversal of 100013421 is 124310001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100013421 - 2⁶ = 100013357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100013397 and 100013406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100013021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3966 + ... + 14688.

It is an arithmetic number, because the mean of its divisors is an integer number (16675820).

Almost surely, 2^100013421 is an apocalyptic number.

It is an amenable number.

100013421 is a deficient number, since it is larger than the sum of its proper divisors (33393139).

100013421 is a wasteful number, since it uses less digits than its factorization.

100013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13835.

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

The square root of 100013421 is about 10000.6710274861. The cubic root of 100013421 is about 464.1796473536.

Adding to 100013421 its reverse (124310001), we get a palindrome (224323422).

The spelling of 100013421 in words is "one hundred million, thirteen thousand, four hundred twenty-one".