43124642123 has 2 divisors, whose sum is σ = 43124642124. Its totient is φ = 43124642122.

The previous prime is 43124642117. The next prime is 43124642219. The reversal of 43124642123 is 32124642134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43124642123 - 2⁴ = 43124642107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43124642123.

It is not a weakly prime, because it can be changed into another prime (43124942123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21562321061 + 21562321062.

It is an arithmetic number, because the mean of its divisors is an integer number (21562321062).

Almost surely, 2^43124642123 is an apocalyptic number.

43124642123 is a deficient number, since it is larger than the sum of its proper divisors (1).

43124642123 is an equidigital number, since it uses as much as digits as its factorization.

43124642123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 32.

The spelling of 43124642123 in words is "forty-three billion, one hundred twenty-four million, six hundred forty-two thousand, one hundred twenty-three".