123706039 has 2 divisors, whose sum is σ = 123706040. Its totient is φ = 123706038.

The previous prime is 123706013. The next prime is 123706043. The reversal of 123706039 is 930607321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123706039 - 2⁵ = 123706007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123706039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123706049) by changing a digit.

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 as a sum of consecutive naturals, namely, 61853019 + 61853020.

It is an arithmetic number, because the mean of its divisors is an integer number (61853020).

Almost surely, 2^123706039 is an apocalyptic number.

123706039 is a deficient number, since it is larger than the sum of its proper divisors (1).

123706039 is an equidigital number, since it uses as much as digits as its factorization.

123706039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 123706039 is about 11122.3216551222. The cubic root of 123706039 is about 498.2687310008.

The spelling of 123706039 in words is "one hundred twenty-three million, seven hundred six thousand, thirty-nine".