102530105 has 4 divisors (see below), whose sum is σ = 123036132. Its totient is φ = 82024080.

The previous prime is 102530093. The next prime is 102530107. The reversal of 102530105 is 501035201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501035201 = 89 ⋅5629609.

It can be written as a sum of positive squares in 2 ways, for example, as 14845609 + 87684496 = 3853^2 + 9364^2 .

It is not a de Polignac number, because 102530105 - 2⁴ = 102530089 is a prime.

It is a super-2 number, since 2×102530105² = 21024844862622050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102530107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10253006 + ... + 10253015.

It is an arithmetic number, because the mean of its divisors is an integer number (30759033).

Almost surely, 2^102530105 is an apocalyptic number.

It is an amenable number.

102530105 is a deficient number, since it is larger than the sum of its proper divisors (20506027).

102530105 is an equidigital number, since it uses as much as digits as its factorization.

102530105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20506026.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 102530105 is about 10125.7150364801. The cubic root of 102530105 is about 468.0408945320.

Adding to 102530105 its reverse (501035201), we get a palindrome (603565306).

The spelling of 102530105 in words is "one hundred two million, five hundred thirty thousand, one hundred five".