105434121239 has 2 divisors, whose sum is σ = 105434121240. Its totient is φ = 105434121238.

The previous prime is 105434121209. The next prime is 105434121241. The reversal of 105434121239 is 932121434501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105434121239 - 2²⁰ = 105433072663 is a prime.

It is a super-2 number, since 2×105434121239² (a number of 23 digits) contains 22 as substring.

Together with 105434121241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 105434121199 and 105434121208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105434121209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52717060619 + 52717060620.

It is an arithmetic number, because the mean of its divisors is an integer number (52717060620).

Almost surely, 2^105434121239 is an apocalyptic number.

105434121239 is a deficient number, since it is larger than the sum of its proper divisors (1).

105434121239 is an equidigital number, since it uses as much as digits as its factorization.

105434121239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 105434121239 in words is "one hundred five billion, four hundred thirty-four million, one hundred twenty-one thousand, two hundred thirty-nine".