100424543 has 4 divisors (see below), whose sum is σ = 100543128. Its totient is φ = 100305960.

The previous prime is 100424521. The next prime is 100424561. The reversal of 100424543 is 345424001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100424543 - 2¹² = 100420447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100424503) 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 3 ways as a sum of consecutive naturals, for example, 58013 + ... + 59718.

It is an arithmetic number, because the mean of its divisors is an integer number (25135782).

Almost surely, 2^100424543 is an apocalyptic number.

100424543 is a deficient number, since it is larger than the sum of its proper divisors (118585).

100424543 is an equidigital number, since it uses as much as digits as its factorization.

100424543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118584.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 100424543 is about 10021.2046681025. The cubic root of 100424543 is about 464.8148073581.

Adding to 100424543 its reverse (345424001), we get a palindrome (445848544).

The spelling of 100424543 in words is "one hundred million, four hundred twenty-four thousand, five hundred forty-three".