100403543 has 16 divisors (see below), whose sum is σ = 107980800. Its totient is φ = 93078720.

The previous prime is 100403519. The next prime is 100403561. The reversal of 100403543 is 345304001.

It is not a de Polignac number, because 100403543 - 2⁸ = 100403287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100403503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264728 + ... + 265106.

It is an arithmetic number, because the mean of its divisors is an integer number (6748800).

Almost surely, 2^100403543 is an apocalyptic number.

100403543 is a deficient number, since it is larger than the sum of its proper divisors (7577257).

100403543 is a wasteful number, since it uses less digits than its factorization.

100403543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 100403543 is about 10020.1568350999. The cubic root of 100403543 is about 464.7824056127.

Adding to 100403543 its reverse (345304001), we get a palindrome (445707544).

The spelling of 100403543 in words is "one hundred million, four hundred three thousand, five hundred forty-three".