100115143 has 4 divisors (see below), whose sum is σ = 100291048. Its totient is φ = 99939240.

The previous prime is 100115129. The next prime is 100115173. The reversal of 100115143 is 341511001.

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 100115143 - 2⁹ = 100114631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100115173) 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, 87096 + ... + 88237.

It is an arithmetic number, because the mean of its divisors is an integer number (25072762).

Almost surely, 2^100115143 is an apocalyptic number.

100115143 is a deficient number, since it is larger than the sum of its proper divisors (175905).

100115143 is an equidigital number, since it uses as much as digits as its factorization.

100115143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175904.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 100115143 is about 10005.7554937146. The cubic root of 100115143 is about 464.3369638507.

Adding to 100115143 its reverse (341511001), we get a palindrome (441626144).

The spelling of 100115143 in words is "one hundred million, one hundred fifteen thousand, one hundred forty-three".