100243240 has 32 divisors (see below), whose sum is σ = 237420000. Its totient is φ = 37986624.

The previous prime is 100243229. The next prime is 100243261. The reversal of 100243240 is 42342001.

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, 65190 + ... + 66709.

It is an arithmetic number, because the mean of its divisors is an integer number (7419375).

Almost surely, 2^100243240 is an apocalyptic number.

100243240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100243240 is an abundant number, since it is smaller than the sum of its proper divisors (137176760).

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

100243240 is a wasteful number, since it uses less digits than its factorization.

100243240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131929 (or 131925 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 100243240 is about 10012.1546132688. The cubic root of 100243240 is about 464.5349186591.

Adding to 100243240 its reverse (42342001), we get a palindrome (142585241).

The spelling of 100243240 in words is "one hundred million, two hundred forty-three thousand, two hundred forty".