102530 has 8 divisors (see below), whose sum is σ = 184572. Its totient is φ = 41008.

The previous prime is 102523. The next prime is 102533. The reversal of 102530 is 35201.

It can be written as a sum of positive squares in 2 ways, for example, as 94249 + 8281 = 307^2 + 91^2 .

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

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (102533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5117 + ... + 5136.

2¹⁰²⁵³⁰ is an apocalyptic number.

102530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102530 is a deficient number, since it is larger than the sum of its proper divisors (82042).

102530 is a wasteful number, since it uses less digits than its factorization.

102530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 102530 is about 320.2030605725. The cubic root of 102530 is about 46.8040734760.

Adding to 102530 its reverse (35201), we get a palindrome (137731).

The spelling of 102530 in words is "one hundred two thousand, five hundred thirty".