43201123145 has 4 divisors (see below), whose sum is σ = 51841347780. Its totient is φ = 34560898512.

The previous prime is 43201123093. The next prime is 43201123157. The reversal of 43201123145 is 54132110234.

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: 54132110234 = 2 ⋅27066055117.

It can be written as a sum of positive squares in 2 ways, for example, as 22852671241 + 20348451904 = 151171^2 + 142648^2 .

It is a cyclic number.

It is not a de Polignac number, because 43201123145 - 2²⁴ = 43184345929 is a prime.

It is an unprimeable number.

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, 4320112310 + ... + 4320112319.

It is an arithmetic number, because the mean of its divisors is an integer number (12960336945).

Almost surely, 2^43201123145 is an apocalyptic number.

It is an amenable number.

43201123145 is a deficient number, since it is larger than the sum of its proper divisors (8640224635).

43201123145 is an equidigital number, since it uses as much as digits as its factorization.

43201123145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640224634.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 43201123145 its reverse (54132110234), we get a palindrome (97333233379).

The spelling of 43201123145 in words is "forty-three billion, two hundred one million, one hundred twenty-three thousand, one hundred forty-five".