43120044139 has 2 divisors, whose sum is σ = 43120044140. Its totient is φ = 43120044138.

The previous prime is 43120044137. The next prime is 43120044173. The reversal of 43120044139 is 93144002134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43120044139 - 2¹ = 43120044137 is a prime.

Together with 43120044137, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 43120044139.

It is not a weakly prime, because it can be changed into another prime (43120044137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21560022069 + 21560022070.

It is an arithmetic number, because the mean of its divisors is an integer number (21560022070).

Almost surely, 2^43120044139 is an apocalyptic number.

43120044139 is a deficient number, since it is larger than the sum of its proper divisors (1).

43120044139 is an equidigital number, since it uses as much as digits as its factorization.

43120044139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 43120044139 in words is "forty-three billion, one hundred twenty million, forty-four thousand, one hundred thirty-nine".