100043056 has 20 divisors (see below), whose sum is σ = 204035800. Its totient is φ = 47388672.

The previous prime is 100043051. The next prime is 100043059. The reversal of 100043056 is 650340001.

It is a super-2 number, since 2×100043056² = 20017226107638272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100043051) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 164241 + ... + 164848.

It is an arithmetic number, because the mean of its divisors is an integer number (10201790).

Almost surely, 2^100043056 is an apocalyptic number.

100043056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

100043056 is an abundant number, since it is smaller than the sum of its proper divisors (103992744).

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

100043056 is a wasteful number, since it uses less digits than its factorization.

100043056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329116 (or 329110 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 100043056 is about 10002.1525683225. The cubic root of 100043056 is about 464.2254898858.

Adding to 100043056 its reverse (650340001), we get a palindrome (750383057).

The spelling of 100043056 in words is "one hundred million, forty-three thousand, fifty-six".