105145141123 has 4 divisors (see below), whose sum is σ = 114703790328. Its totient is φ = 95586491920.

The previous prime is 105145141099. The next prime is 105145141133. The reversal of 105145141123 is 321141541501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321141541501 = 11 ⋅29194685591.

It is a cyclic number.

It is not a de Polignac number, because 105145141123 - 2⁵ = 105145141091 is a prime.

It is a super-2 number, since 2×105145141123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105145141091 and 105145141100.

It is not an unprimeable number, because it can be changed into a prime (105145141133) 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, 4779324586 + ... + 4779324607.

It is an arithmetic number, because the mean of its divisors is an integer number (28675947582).

Almost surely, 2^105145141123 is an apocalyptic number.

105145141123 is a deficient number, since it is larger than the sum of its proper divisors (9558649205).

105145141123 is an equidigital number, since it uses as much as digits as its factorization.

105145141123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9558649204.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 105145141123 its reverse (321141541501), we get a palindrome (426286682624).

The spelling of 105145141123 in words is "one hundred five billion, one hundred forty-five million, one hundred forty-one thousand, one hundred twenty-three".