102140105423 has 4 divisors (see below), whose sum is σ = 102141664128. Its totient is φ = 102138546720.

The previous prime is 102140105401. The next prime is 102140105477. The reversal of 102140105423 is 324501041201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324501041201 = 827 ⋅392383363.

It is a cyclic number.

It is not a de Polignac number, because 102140105423 - 2²⁶ = 102072996559 is a prime.

It is a super-2 number, since 2×102140105423² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102140105923) 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, 676538 + ... + 813623.

It is an arithmetic number, because the mean of its divisors is an integer number (25535416032).

Almost surely, 2^102140105423 is an apocalyptic number.

102140105423 is a deficient number, since it is larger than the sum of its proper divisors (1558705).

102140105423 is an equidigital number, since it uses as much as digits as its factorization.

102140105423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558704.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 102140105423 its reverse (324501041201), we get a palindrome (426641146624).

The spelling of 102140105423 in words is "one hundred two billion, one hundred forty million, one hundred five thousand, four hundred twenty-three".