105112145143 has 4 divisors (see below), whose sum is σ = 105113703240. Its totient is φ = 105110587048.

The previous prime is 105112145111. The next prime is 105112145147. The reversal of 105112145143 is 341541211501.

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: 341541211501 = 7 ⋅48791601643.

It is a cyclic number.

It is not a de Polignac number, because 105112145143 - 2⁵ = 105112145111 is a prime.

It is a super-2 number, since 2×105112145143² (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 (105112145147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673048 + ... + 814381.

It is an arithmetic number, because the mean of its divisors is an integer number (26278425810).

Almost surely, 2^105112145143 is an apocalyptic number.

105112145143 is a deficient number, since it is larger than the sum of its proper divisors (1558097).

105112145143 is an equidigital number, since it uses as much as digits as its factorization.

105112145143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558096.

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

Adding to 105112145143 its reverse (341541211501), we get a palindrome (446653356644).

The spelling of 105112145143 in words is "one hundred five billion, one hundred twelve million, one hundred forty-five thousand, one hundred forty-three".