126316139 has 2 divisors, whose sum is σ = 126316140. Its totient is φ = 126316138.

The previous prime is 126316129. The next prime is 126316153. The reversal of 126316139 is 931613621.

It is a weak prime.

It is an emirp because it is prime and its reverse (931613621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126316139 - 2⁸ = 126315883 is a prime.

It is not a weakly prime, because it can be changed into another prime (126316129) 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, 63158069 + 63158070.

It is an arithmetic number, because the mean of its divisors is an integer number (63158070).

Almost surely, 2^126316139 is an apocalyptic number.

126316139 is a deficient number, since it is larger than the sum of its proper divisors (1).

126316139 is an equidigital number, since it uses as much as digits as its factorization.

126316139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 126316139 is about 11239.0452886355. The cubic root of 126316139 is about 501.7487287651.

The spelling of 126316139 in words is "one hundred twenty-six million, three hundred sixteen thousand, one hundred thirty-nine".