100421343 has 16 divisors (see below), whose sum is σ = 162297600. Its totient is φ = 60861240.

The previous prime is 100421333. The next prime is 100421357. The reversal of 100421343 is 343124001.

It is not a de Polignac number, because 100421343 - 2²⁶ = 33312479 is a prime.

It is a super-2 number, since 2×100421343² = 20168892259847298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100421303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168763 + ... + 169356.

It is an arithmetic number, because the mean of its divisors is an integer number (10143600).

Almost surely, 2^100421343 is an apocalyptic number.

100421343 is a deficient number, since it is larger than the sum of its proper divisors (61876257).

100421343 is a wasteful number, since it uses less digits than its factorization.

100421343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338139 (or 338133 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 100421343 is about 10021.0450053874. The cubic root of 100421343 is about 464.8098702410.

Adding to 100421343 its reverse (343124001), we get a palindrome (443545344).

The spelling of 100421343 in words is "one hundred million, four hundred twenty-one thousand, three hundred forty-three".