100442440423 has 12 divisors (see below), whose sum is σ = 109218235680. Its totient is φ = 92328128256.

The previous prime is 100442440391. The next prime is 100442440453. The reversal of 100442440423 is 324044244001.

It is not a de Polignac number, because 100442440423 - 2⁵ = 100442440391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100442440391 and 100442440400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100442440453) 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 11 ways as a sum of consecutive naturals, for example, 1202986 + ... + 1283767.

It is an arithmetic number, because the mean of its divisors is an integer number (9101519640).

Almost surely, 2^100442440423 is an apocalyptic number.

100442440423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

100442440423 is a deficient number, since it is larger than the sum of its proper divisors (8775795257).

100442440423 is a wasteful number, since it uses less digits than its factorization.

100442440423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487018 (or 2487005 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 100442440423 its reverse (324044244001), we get a palindrome (424486684424).

The spelling of 100442440423 in words is "one hundred billion, four hundred forty-two million, four hundred forty thousand, four hundred twenty-three".