102323421205 has 4 divisors (see below), whose sum is σ = 122788105452. Its totient is φ = 81858736960.

The previous prime is 102323421203. The next prime is 102323421229. The reversal of 102323421205 is 502124323201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502124323201 = 1013 ⋅495680477.

It can be written as a sum of positive squares in 2 ways, for example, as 46473442929 + 55849978276 = 215577^2 + 236326^2 .

It is not a de Polignac number, because 102323421205 - 2¹ = 102323421203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102323421205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102323421203) 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, 10232342116 + ... + 10232342125.

It is an arithmetic number, because the mean of its divisors is an integer number (30697026363).

Almost surely, 2^102323421205 is an apocalyptic number.

It is an amenable number.

102323421205 is a deficient number, since it is larger than the sum of its proper divisors (20464684247).

102323421205 is an equidigital number, since it uses as much as digits as its factorization.

102323421205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20464684246.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 102323421205 its reverse (502124323201), we get a palindrome (604447744406).

The spelling of 102323421205 in words is "one hundred two billion, three hundred twenty-three million, four hundred twenty-one thousand, two hundred five".