100442401243 has 4 divisors (see below), whose sum is σ = 100700608320. Its totient is φ = 100184194168.

The previous prime is 100442401193. The next prime is 100442401253. The reversal of 100442401243 is 342104244001.

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

It is a cyclic number.

It is not a de Polignac number, because 100442401243 - 2⁹ = 100442400731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100442401253) 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, 129102955 + ... + 129103732.

It is an arithmetic number, because the mean of its divisors is an integer number (25175152080).

Almost surely, 2^100442401243 is an apocalyptic number.

100442401243 is a deficient number, since it is larger than the sum of its proper divisors (258207077).

100442401243 is an equidigital number, since it uses as much as digits as its factorization.

100442401243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258207076.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 100442401243 its reverse (342104244001), we get a palindrome (442546645244).

The spelling of 100442401243 in words is "one hundred billion, four hundred forty-two million, four hundred one thousand, two hundred forty-three".