102020334245 has 4 divisors (see below), whose sum is σ = 122424401100. Its totient is φ = 81616267392.

The previous prime is 102020334233. The next prime is 102020334257. The reversal of 102020334245 is 542433020201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542433020201 = 269 ⋅2016479629.

It is an interprime number because it is at equal distance from previous prime (102020334233) and next prime (102020334257).

It can be written as a sum of positive squares in 2 ways, for example, as 45779737444 + 56240596801 = 213962^2 + 237151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102020334245 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10202033420 + ... + 10202033429.

It is an arithmetic number, because the mean of its divisors is an integer number (30606100275).

Almost surely, 2^102020334245 is an apocalyptic number.

It is an amenable number.

102020334245 is a deficient number, since it is larger than the sum of its proper divisors (20404066855).

102020334245 is an equidigital number, since it uses as much as digits as its factorization.

102020334245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20404066854.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 102020334245 its reverse (542433020201), we get a palindrome (644453354446).

The spelling of 102020334245 in words is "one hundred two billion, twenty million, three hundred thirty-four thousand, two hundred forty-five".