100043423 has 2 divisors, whose sum is σ = 100043424. Its totient is φ = 100043422.

The previous prime is 100043393. The next prime is 100043431. The reversal of 100043423 is 324340001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100043423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100043483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50021711 + 50021712.

It is an arithmetic number, because the mean of its divisors is an integer number (50021712).

Almost surely, 2^100043423 is an apocalyptic number.

100043423 is a deficient number, since it is larger than the sum of its proper divisors (1).

100043423 is an equidigital number, since it uses as much as digits as its factorization.

100043423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 100043423 is about 10002.1709143565. The cubic root of 100043423 is about 464.2260575432.

Adding to 100043423 its reverse (324340001), we get a palindrome (424383424).

The spelling of 100043423 in words is "one hundred million, forty-three thousand, four hundred twenty-three".