105420743423 has 2 divisors, whose sum is σ = 105420743424. Its totient is φ = 105420743422.

The previous prime is 105420743297. The next prime is 105420743453. The reversal of 105420743423 is 324347024501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105420743423 - 2²⁰ = 105419694847 is a prime.

It is a super-2 number, since 2×105420743423² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105420743453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52710371711 + 52710371712.

It is an arithmetic number, because the mean of its divisors is an integer number (52710371712).

Almost surely, 2^105420743423 is an apocalyptic number.

105420743423 is a deficient number, since it is larger than the sum of its proper divisors (1).

105420743423 is an equidigital number, since it uses as much as digits as its factorization.

105420743423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 35.

Adding to 105420743423 its reverse (324347024501), we get a palindrome (429767767924).

The spelling of 105420743423 in words is "one hundred five billion, four hundred twenty million, seven hundred forty-three thousand, four hundred twenty-three".