102130305 has 32 divisors (see below), whose sum is σ = 175488768. Its totient is φ = 50534400.

The previous prime is 102130297. The next prime is 102130307. The reversal of 102130305 is 503031201.

It is a happy number.

It is not a de Polignac number, because 102130305 - 2³ = 102130297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (102130307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15285 + ... + 20925.

It is an arithmetic number, because the mean of its divisors is an integer number (5484024).

Almost surely, 2^102130305 is an apocalyptic number.

102130305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102130305 is a deficient number, since it is larger than the sum of its proper divisors (73358463).

102130305 is a wasteful number, since it uses less digits than its factorization.

102130305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 102130305 is about 10105.9539381495. The cubic root of 102130305 is about 467.4317515021.

Adding to 102130305 its reverse (503031201), we get a palindrome (605161506).

The spelling of 102130305 in words is "one hundred two million, one hundred thirty thousand, three hundred five".