100001443 has 4 divisors (see below), whose sum is σ = 103227328. Its totient is φ = 96775560.

The previous prime is 100001431. The next prime is 100001449. The reversal of 100001443 is 344100001.

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 100001443 - 2²⁵ = 66447011 is a prime.

It is a Duffinian number.

100001443 is a modest number, since divided by 1443 gives 100 as remainder.

It is not an unprimeable number, because it can be changed into a prime (100001449) 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 in 3 ways as a sum of consecutive naturals, for example, 1612896 + ... + 1612957.

It is an arithmetic number, because the mean of its divisors is an integer number (25806832).

Almost surely, 2^100001443 is an apocalyptic number.

100001443 is a deficient number, since it is larger than the sum of its proper divisors (3225885).

100001443 is an equidigital number, since it uses as much as digits as its factorization.

100001443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225884.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 100001443 is about 10000.0721497397. The cubic root of 100001443 is about 464.1611159548.

Adding to 100001443 its reverse (344100001), we get a palindrome (444101444).

The spelling of 100001443 in words is "one hundred million, one thousand, four hundred forty-three".