100743 has 4 divisors (see below), whose sum is σ = 134328. Its totient is φ = 67160.

The previous prime is 100741. The next prime is 100747. The reversal of 100743 is 347001.

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 100743 - 2¹ = 100741 is a prime.

It is a D-number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16788 + ... + 16793.

It is an arithmetic number, because the mean of its divisors is an integer number (33582).

2¹⁰⁰⁷⁴³ is an apocalyptic number.

100743 is a deficient number, since it is larger than the sum of its proper divisors (33585).

100743 is an equidigital number, since it uses as much as digits as its factorization.

100743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33584.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 100743 is about 317.4003780716. The cubic root of 100743 is about 46.5305614796.

Adding to 100743 its reverse (347001), we get a palindrome (447744).

The spelling of 100743 in words is "one hundred thousand, seven hundred forty-three", and thus it is an iban number.