100404243 has 12 divisors (see below), whose sum is σ = 145126488. Its totient is φ = 66890880.

The previous prime is 100404221. The next prime is 100404247. The reversal of 100404243 is 342404001.

It is not a de Polignac number, because 100404243 - 2⁵ = 100404211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100404247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15388 + ... + 20918.

It is an arithmetic number, because the mean of its divisors is an integer number (12093874).

Almost surely, 2^100404243 is an apocalyptic number.

100404243 is a deficient number, since it is larger than the sum of its proper divisors (44722245).

100404243 is a wasteful number, since it uses less digits than its factorization.

100404243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7554 (or 7551 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 100404243 is about 10020.1917646321. The cubic root of 100404243 is about 464.7834857436.

Adding to 100404243 its reverse (342404001), we get a palindrome (442808244).

The spelling of 100404243 in words is "one hundred million, four hundred four thousand, two hundred forty-three".