102120323243 has 4 divisors (see below), whose sum is σ = 103644507240. Its totient is φ = 100596139248.

The previous prime is 102120323237. The next prime is 102120323267. The reversal of 102120323243 is 342323021201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102120323243 - 2¹⁴ = 102120306859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102120323213) 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, 762091898 + ... + 762092031.

It is an arithmetic number, because the mean of its divisors is an integer number (25911126810).

Almost surely, 2^102120323243 is an apocalyptic number.

102120323243 is a deficient number, since it is larger than the sum of its proper divisors (1524183997).

102120323243 is an equidigital number, since it uses as much as digits as its factorization.

102120323243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524183996.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 102120323243 its reverse (342323021201), we get a palindrome (444443344444).

The spelling of 102120323243 in words is "one hundred two billion, one hundred twenty million, three hundred twenty-three thousand, two hundred forty-three".