100387543 has 4 divisors (see below), whose sum is σ = 100638288. Its totient is φ = 100136800.

The previous prime is 100387537. The next prime is 100387561. The reversal of 100387543 is 345783001.

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 100387543 - 2¹³ = 100379351 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 (100387513) 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, 124771 + ... + 125572.

It is an arithmetic number, because the mean of its divisors is an integer number (25159572).

Almost surely, 2^100387543 is an apocalyptic number.

100387543 is a deficient number, since it is larger than the sum of its proper divisors (250745).

100387543 is an equidigital number, since it uses as much as digits as its factorization.

100387543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250744.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 100387543 is about 10019.3584125931. The cubic root of 100387543 is about 464.7577155359.

The spelling of 100387543 in words is "one hundred million, three hundred eighty-seven thousand, five hundred forty-three".