100543900 has 18 divisors (see below), whose sum is σ = 218180480. Its totient is φ = 40217520.

The previous prime is 100543873. The next prime is 100543901. The reversal of 100543900 is 9345001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100543901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 502620 + ... + 502819.

Almost surely, 2^100543900 is an apocalyptic number.

100543900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100543900 is an abundant number, since it is smaller than the sum of its proper divisors (117636580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100543900 is a wasteful number, since it uses less digits than its factorization.

100543900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005453 (or 1005446 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 100543900 is about 10027.1581218210. The cubic root of 100543900 is about 464.9988823344.

Adding to 100543900 its reverse (9345001), we get a palindrome (109888901).

The spelling of 100543900 in words is "one hundred million, five hundred forty-three thousand, nine hundred".