100544243 has 4 divisors (see below), whose sum is σ = 101020968. Its totient is φ = 100067520.

The previous prime is 100544237. The next prime is 100544251. The reversal of 100544243 is 342445001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342445001 = 1049 ⋅326449.

It is a cyclic number.

It is not a de Polignac number, because 100544243 - 2²⁰ = 99495667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100544263) 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, 238046 + ... + 238467.

It is an arithmetic number, because the mean of its divisors is an integer number (25255242).

Almost surely, 2^100544243 is an apocalyptic number.

100544243 is a deficient number, since it is larger than the sum of its proper divisors (476725).

100544243 is an equidigital number, since it uses as much as digits as its factorization.

100544243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476724.

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

The square root of 100544243 is about 10027.1752253563. The cubic root of 100544243 is about 464.9994111065. Note that the first 3 decimals are identical.

Adding to 100544243 its reverse (342445001), we get a palindrome (442989244).

The spelling of 100544243 in words is "one hundred million, five hundred forty-four thousand, two hundred forty-three".