100043375 has 32 divisors (see below), whose sum is σ = 130131456. Its totient is φ = 76723200.

The previous prime is 100043371. The next prime is 100043393. The reversal of 100043375 is 573340001.

It is a happy number.

It is not a de Polignac number, because 100043375 - 2² = 100043371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100043375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100043371) 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 31 ways as a sum of consecutive naturals, for example, 448514 + ... + 448736.

It is an arithmetic number, because the mean of its divisors is an integer number (4066608).

Almost surely, 2^100043375 is an apocalyptic number.

100043375 is a deficient number, since it is larger than the sum of its proper divisors (30088081).

100043375 is an equidigital number, since it uses as much as digits as its factorization.

100043375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 100043375 is about 10002.1685148772. The cubic root of 100043375 is about 464.2259832992.

Adding to 100043375 its reverse (573340001), we get a palindrome (673383376).

The spelling of 100043375 in words is "one hundred million, forty-three thousand, three hundred seventy-five".