100004240 has 80 divisors (see below), whose sum is σ = 271970688. Its totient is φ = 33481728.

The previous prime is 100004189. The next prime is 100004243. The reversal of 100004240 is 42400001.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (100004243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22004 + ... + 26156.

Almost surely, 2^100004240 is an apocalyptic number.

100004240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100004240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135985344).

100004240 is an abundant number, since it is smaller than the sum of its proper divisors (171966448).

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

100004240 is a wasteful number, since it uses less digits than its factorization.

100004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216 (or 4210 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 100004240 is about 10000.2119977528. The cubic root of 100004240 is about 464.1654433808.

Adding to 100004240 its reverse (42400001), we get a palindrome (142404241).

The spelling of 100004240 in words is "one hundred million, four thousand, two hundred forty".