102100305 has 8 divisors (see below), whose sum is σ = 163360512. Its totient is φ = 54453488.

The previous prime is 102100301. The next prime is 102100307. The reversal of 102100305 is 503001201.

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

It is a cyclic number.

It is not a de Polignac number, because 102100305 - 2² = 102100301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102100301) 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, 3403329 + ... + 3403358.

It is an arithmetic number, because the mean of its divisors is an integer number (20420064).

Almost surely, 2^102100305 is an apocalyptic number.

102100305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102100305 is a deficient number, since it is larger than the sum of its proper divisors (61260207).

102100305 is an equidigital number, since it uses as much as digits as its factorization.

102100305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6806695.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 102100305 is about 10104.4695555977. The cubic root of 102100305 is about 467.3859788465.

Adding to 102100305 its reverse (503001201), we get a palindrome (605101506).

The spelling of 102100305 in words is "one hundred two million, one hundred thousand, three hundred five".