100543104 has 48 divisors (see below), whose sum is σ = 289326570. Its totient is φ = 33513984.

The previous prime is 100543103. The next prime is 100543109. The reversal of 100543104 is 401345001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 60093504 + 40449600 = 7752^2 + 6360^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (100543103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42487 + ... + 44790.

Almost surely, 2^100543104 is an apocalyptic number.

It is an amenable number.

100543104 is an abundant number, since it is smaller than the sum of its proper divisors (188783466).

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

100543104 is an equidigital number, since it uses as much as digits as its factorization.

100543104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87297 (or 87282 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 100543104 is about 10027.1184295390. The cubic root of 100543104 is about 464.9976552084.

Adding to 100543104 its reverse (401345001), we get a palindrome (501888105).

The spelling of 100543104 in words is "one hundred million, five hundred forty-three thousand, one hundred four".