123038009 has 2 divisors, whose sum is σ = 123038010. Its totient is φ = 123038008.

The previous prime is 123037991. The next prime is 123038021. The reversal of 123038009 is 900830321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74874409 + 48163600 = 8653^2 + 6940^2 .

It is a cyclic number.

It is not a de Polignac number, because 123038009 - 2⁸ = 123037753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123038029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61519004 + 61519005.

It is an arithmetic number, because the mean of its divisors is an integer number (61519005).

Almost surely, 2^123038009 is an apocalyptic number.

It is an amenable number.

123038009 is a deficient number, since it is larger than the sum of its proper divisors (1).

123038009 is an equidigital number, since it uses as much as digits as its factorization.

123038009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 123038009 is about 11092.2499521062. The cubic root of 123038009 is about 497.3702046019.

The spelling of 123038009 in words is "one hundred twenty-three million, thirty-eight thousand, nine".