129005498 has 8 divisors (see below), whose sum is σ = 197159508. Its totient is φ = 63285664.

The previous prime is 129005473. The next prime is 129005501. The reversal of 129005498 is 894500921.

It can be written as a sum of positive squares in 2 ways, for example, as 127757809 + 1247689 = 11303^2 + 1117^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608411 + ... + 608622.

Almost surely, 2^129005498 is an apocalyptic number.

129005498 is a deficient number, since it is larger than the sum of its proper divisors (68154010).

129005498 is a wasteful number, since it uses less digits than its factorization.

129005498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217088.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 129005498 is about 11358.0587249758. The cubic root of 129005498 is about 505.2846129531.

The spelling of 129005498 in words is "one hundred twenty-nine million, five thousand, four hundred ninety-eight".