100240815 has 8 divisors (see below), whose sum is σ = 160385328. Its totient is φ = 53461760.

The previous prime is 100240787. The next prime is 100240879. The reversal of 100240815 is 518042001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100240815 - 2¹⁶ = 100175279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100240791 and 100240800.

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, 3341346 + ... + 3341375.

It is an arithmetic number, because the mean of its divisors is an integer number (20048166).

Almost surely, 2^100240815 is an apocalyptic number.

100240815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100240815 is a deficient number, since it is larger than the sum of its proper divisors (60144513).

100240815 is an equidigital number, since it uses as much as digits as its factorization.

100240815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6682729.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 100240815 is about 10012.0335097322. The cubic root of 100240815 is about 464.5311727498.

Adding to 100240815 its reverse (518042001), we get a palindrome (618282816).

The spelling of 100240815 in words is "one hundred million, two hundred forty thousand, eight hundred fifteen".