129260485 has 8 divisors (see below), whose sum is σ = 156855960. Its totient is φ = 102246144.

The previous prime is 129260479. The next prime is 129260489. The reversal of 129260485 is 584062921.

It can be written as a sum of positive squares in 4 ways, for example, as 74529 + 129185956 = 273^2 + 11366^2 .

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 129260485 - 2¹⁹ = 128736197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129260489) 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, 144792 + ... + 145681.

It is an arithmetic number, because the mean of its divisors is an integer number (19606995).

Almost surely, 2^129260485 is an apocalyptic number.

It is an amenable number.

129260485 is a deficient number, since it is larger than the sum of its proper divisors (27595475).

129260485 is an equidigital number, since it uses as much as digits as its factorization.

129260485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290567.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 129260485 is about 11369.2781213233. The cubic root of 129260485 is about 505.6173021676.

The spelling of 129260485 in words is "one hundred twenty-nine million, two hundred sixty thousand, four hundred eighty-five".