43207139 has 2 divisors, whose sum is σ = 43207140. Its totient is φ = 43207138.

The previous prime is 43207123. The next prime is 43207141. The reversal of 43207139 is 93170234.

43207139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43207139 - 2⁴ = 43207123 is a prime.

Together with 43207141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43207189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21603569 + 21603570.

It is an arithmetic number, because the mean of its divisors is an integer number (21603570).

Almost surely, 2^43207139 is an apocalyptic number.

43207139 is a deficient number, since it is larger than the sum of its proper divisors (1).

43207139 is an equidigital number, since it uses as much as digits as its factorization.

43207139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 43207139 is about 6573.2137497574. The cubic root of 43207139 is about 350.9014558197.

The spelling of 43207139 in words is "forty-three million, two hundred seven thousand, one hundred thirty-nine".