100530043 has 4 divisors (see below), whose sum is σ = 100762648. Its totient is φ = 100297440.

The previous prime is 100529983. The next prime is 100530049. The reversal of 100530043 is 340035001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100530043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100529999 and 100530026.

It is not an unprimeable number, because it can be changed into a prime (100530049) 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, 115653 + ... + 116518.

It is an arithmetic number, because the mean of its divisors is an integer number (25190662).

Almost surely, 2^100530043 is an apocalyptic number.

100530043 is a deficient number, since it is larger than the sum of its proper divisors (232605).

100530043 is an equidigital number, since it uses as much as digits as its factorization.

100530043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232604.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 100530043 is about 10026.4671245659. The cubic root of 100530043 is about 464.9775192431.

Adding to 100530043 its reverse (340035001), we get a palindrome (440565044).

The spelling of 100530043 in words is "one hundred million, five hundred thirty thousand, forty-three".