102302645 has 4 divisors (see below), whose sum is σ = 122763180. Its totient is φ = 81842112.

The previous prime is 102302623. The next prime is 102302659. The reversal of 102302645 is 546203201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546203201 = 457 ⋅1195193.

It can be written as a sum of positive squares in 2 ways, for example, as 22146436 + 80156209 = 4706^2 + 8953^2 .

It is a cyclic number.

It is not a de Polignac number, because 102302645 - 2¹⁰ = 102301621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102302645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10230260 + ... + 10230269.

It is an arithmetic number, because the mean of its divisors is an integer number (30690795).

Almost surely, 2^102302645 is an apocalyptic number.

It is an amenable number.

102302645 is a deficient number, since it is larger than the sum of its proper divisors (20460535).

102302645 is an equidigital number, since it uses as much as digits as its factorization.

102302645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460534.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 102302645 is about 10114.4770008142. The cubic root of 102302645 is about 467.6945266511.

Adding to 102302645 its reverse (546203201), we get a palindrome (648505846).

The spelling of 102302645 in words is "one hundred two million, three hundred two thousand, six hundred forty-five".