100243115 has 8 divisors (see below), whose sum is σ = 137476320. Its totient is φ = 68738112.

The previous prime is 100243079. The next prime is 100243139. The reversal of 100243115 is 511342001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100243115 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100243093 and 100243102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432010 + ... + 1432079.

It is an arithmetic number, because the mean of its divisors is an integer number (17184540).

Almost surely, 2^100243115 is an apocalyptic number.

100243115 is a deficient number, since it is larger than the sum of its proper divisors (37233205).

100243115 is an equidigital number, since it uses as much as digits as its factorization.

100243115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864101.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 100243115 is about 10012.1483708543. The cubic root of 100243115 is about 464.5347255725.

Adding to 100243115 its reverse (511342001), we get a palindrome (611585116).

The spelling of 100243115 in words is "one hundred million, two hundred forty-three thousand, one hundred fifteen".