100143444 has 24 divisors (see below), whose sum is σ = 236871040. Its totient is φ = 32923584.

The previous prime is 100143397. The next prime is 100143457. The reversal of 100143444 is 444341001.

It is a super-2 number, since 2×100143444² = 20057418752362272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100143444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56284 + ... + 58035.

Almost surely, 2^100143444 is an apocalyptic number.

It is an amenable number.

100143444 is an abundant number, since it is smaller than the sum of its proper divisors (136727596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100143444 is a wasteful number, since it uses less digits than its factorization.

100143444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114399 (or 114397 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 100143444 is about 10007.1696298204. The cubic root of 100143444 is about 464.3807133507.

Adding to 100143444 its reverse (444341001), we get a palindrome (544484445).

The spelling of 100143444 in words is "one hundred million, one hundred forty-three thousand, four hundred forty-four".