100012143 has 32 divisors (see below), whose sum is σ = 175011840. Its totient is φ = 49217760.

The previous prime is 100012111. The next prime is 100012153. The reversal of 100012143 is 341210001.

It is a happy number.

It is not a de Polignac number, because 100012143 - 2⁵ = 100012111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7005 + ... + 15782.

It is an arithmetic number, because the mean of its divisors is an integer number (5469120).

Almost surely, 2^100012143 is an apocalyptic number.

100012143 is a deficient number, since it is larger than the sum of its proper divisors (74999697).

100012143 is a wasteful number, since it uses less digits than its factorization.

100012143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22827.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 100012143 is about 10000.6071315696. The cubic root of 100012143 is about 464.1776702053.

Adding to 100012143 its reverse (341210001), we get a palindrome (441222144).

The spelling of 100012143 in words is "one hundred million, twelve thousand, one hundred forty-three".