129838059 has 48 divisors (see below), whose sum is σ = 218679552. Its totient is φ = 76383648.

The previous prime is 129838043. The next prime is 129838063. The reversal of 129838059 is 950838921.

129838059 = T₁₉₄ + T₁₉₅ + ... + T₉₂₂.

It is a happy number.

It is not a de Polignac number, because 129838059 - 2⁴ = 129838043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129838099) 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 in 47 ways as a sum of consecutive naturals, for example, 71764 + ... + 73550.

It is an arithmetic number, because the mean of its divisors is an integer number (4555824).

Almost surely, 2^129838059 is an apocalyptic number.

129838059 is a deficient number, since it is larger than the sum of its proper divisors (88841493).

129838059 is a wasteful number, since it uses less digits than its factorization.

129838059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1826 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 129838059 is about 11394.6504553672. The cubic root of 129838059 is about 506.3692657275.

The spelling of 129838059 in words is "one hundred twenty-nine million, eight hundred thirty-eight thousand, fifty-nine".