129498601 has 8 divisors (see below), whose sum is σ = 134221320. Its totient is φ = 124793088.

The previous prime is 129498599. The next prime is 129498613. The reversal of 129498601 is 106894921.

It can be written as a sum of positive squares in 4 ways, for example, as 5198400 + 124300201 = 2280^2 + 11149^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 129498601 - 2¹ = 129498599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129490601) 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, 12145 + ... + 20161.

It is an arithmetic number, because the mean of its divisors is an integer number (16777665).

Almost surely, 2^129498601 is an apocalyptic number.

It is an amenable number.

129498601 is a deficient number, since it is larger than the sum of its proper divisors (4722719).

129498601 is an equidigital number, since it uses as much as digits as its factorization.

129498601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 129498601 is about 11379.7452080440. The cubic root of 129498601 is about 505.9275844542.

The spelling of 129498601 in words is "one hundred twenty-nine million, four hundred ninety-eight thousand, six hundred one".