102100115 has 8 divisors (see below), whose sum is σ = 131944848. Its totient is φ = 75396960.

The previous prime is 102100111. The next prime is 102100123. The reversal of 102100115 is 511001201.

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

It is not a de Polignac number, because 102100115 - 2² = 102100111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102100096 and 102100105.

It is not an unprimeable number, because it can be changed into a prime (102100111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785321 + ... + 785450.

It is an arithmetic number, because the mean of its divisors is an integer number (16493106).

Almost surely, 2^102100115 is an apocalyptic number.

102100115 is a deficient number, since it is larger than the sum of its proper divisors (29844733).

102100115 is a wasteful number, since it uses less digits than its factorization.

102100115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570789.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 102100115 is about 10104.4601538133. The cubic root of 102100115 is about 467.3856889245.

Adding to 102100115 its reverse (511001201), we get a palindrome (613101316).

The spelling of 102100115 in words is "one hundred two million, one hundred thousand, one hundred fifteen".