100143538 has 16 divisors (see below), whose sum is σ = 165325536. Its totient is φ = 45115840.

The previous prime is 100143521. The next prime is 100143557. The reversal of 100143538 is 835341001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17656 + ... + 22627.

It is an arithmetic number, because the mean of its divisors is an integer number (10332846).

Almost surely, 2^100143538 is an apocalyptic number.

100143538 is a deficient number, since it is larger than the sum of its proper divisors (65181998).

100143538 is a wasteful number, since it uses less digits than its factorization.

100143538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40409.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 100143538 is about 10007.1743264520. The cubic root of 100143538 is about 464.3808586482.

Adding to 100143538 its reverse (835341001), we get a palindrome (935484539).

The spelling of 100143538 in words is "one hundred million, one hundred forty-three thousand, five hundred thirty-eight".