100422421 has 8 divisors (see below), whose sum is σ = 109886688. Its totient is φ = 91014000.

The previous prime is 100422419. The next prime is 100422431. The reversal of 100422421 is 124224001.

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

It is not a de Polignac number, because 100422421 - 2¹ = 100422419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100422395 and 100422404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100422431) 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, 10150 + ... + 17431.

It is an arithmetic number, because the mean of its divisors is an integer number (13735836).

Almost surely, 2^100422421 is an apocalyptic number.

100422421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100422421 is a deficient number, since it is larger than the sum of its proper divisors (9464267).

100422421 is a wasteful number, since it uses less digits than its factorization.

100422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27923.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 100422421 is about 10021.0987920487. The cubic root of 100422421 is about 464.8115334440.

Adding to 100422421 its reverse (124224001), we get a palindrome (224646422).

The spelling of 100422421 in words is "one hundred million, four hundred twenty-two thousand, four hundred twenty-one".