138495129 has 8 divisors (see below), whose sum is σ = 186386400. Its totient is φ = 91466976.

The previous prime is 138495109. The next prime is 138495163. The reversal of 138495129 is 921594831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138495129 - 2⁷ = 138495001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138495109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215404 + ... + 216045.

It is an arithmetic number, because the mean of its divisors is an integer number (23298300).

Almost surely, 2^138495129 is an apocalyptic number.

It is an amenable number.

138495129 is a deficient number, since it is larger than the sum of its proper divisors (47891271).

138495129 is a wasteful number, since it uses less digits than its factorization.

138495129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431559.

The product of its digits is 77760, while the sum is 42.

The square root of 138495129 is about 11768.3953451607. The cubic root of 138495129 is about 517.3822196893.

The spelling of 138495129 in words is "one hundred thirty-eight million, four hundred ninety-five thousand, one hundred twenty-nine".