129838154 has 8 divisors (see below), whose sum is σ = 194818980. Its totient is φ = 64898496.

The previous prime is 129838127. The next prime is 129838193. The reversal of 129838154 is 451838921.

It can be written as a sum of positive squares in 2 ways, for example, as 127351225 + 2486929 = 11285^2 + 1577^2 .

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

It is a super-3 number, since 3×129838154³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569 + ... + 16124.

Almost surely, 2^129838154 is an apocalyptic number.

129838154 is a deficient number, since it is larger than the sum of its proper divisors (64980826).

129838154 is a wasteful number, since it uses less digits than its factorization.

129838154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20584.

The product of its digits is 69120, while the sum is 41.

The square root of 129838154 is about 11394.6546239893. The cubic root of 129838154 is about 506.3693892277.

The spelling of 129838154 in words is "one hundred twenty-nine million, eight hundred thirty-eight thousand, one hundred fifty-four".