138004259 has 2 divisors, whose sum is σ = 138004260. Its totient is φ = 138004258.

The previous prime is 138004159. The next prime is 138004289. The reversal of 138004259 is 952400831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138004259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138004289) 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, 69002129 + 69002130.

It is an arithmetic number, because the mean of its divisors is an integer number (69002130).

Almost surely, 2^138004259 is an apocalyptic number.

138004259 is a deficient number, since it is larger than the sum of its proper divisors (1).

138004259 is an equidigital number, since it uses as much as digits as its factorization.

138004259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 138004259 is about 11747.5213981503. The cubic root of 138004259 is about 516.7702413696.

The spelling of 138004259 in words is "one hundred thirty-eight million, four thousand, two hundred fifty-nine".