138030029 has 2 divisors, whose sum is σ = 138030030. Its totient is φ = 138030028.

The previous prime is 138030019. The next prime is 138030031. The reversal of 138030029 is 920030831.

138030029 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 can be written as a sum of positive squares in only one way, i.e., 98465929 + 39564100 = 9923^2 + 6290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138030029 is a prime.

Together with 138030031, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_7807103 and since 138030029 and 7807103 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138030019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69015014 + 69015015.

It is an arithmetic number, because the mean of its divisors is an integer number (69015015).

Almost surely, 2^138030029 is an apocalyptic number.

It is an amenable number.

138030029 is a deficient number, since it is larger than the sum of its proper divisors (1).

138030029 is an equidigital number, since it uses as much as digits as its factorization.

138030029 is an evil number, because the sum of its binary digits is even.

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

The square root of 138030029 is about 11748.6181740663. The cubic root of 138030029 is about 516.8024054501.

The spelling of 138030029 in words is "one hundred thirty-eight million, thirty thousand, twenty-nine".