129962005 has 8 divisors (see below), whose sum is σ = 159758424. Its totient is φ = 101433600.

The previous prime is 129961967. The next prime is 129962009. The reversal of 129962005 is 500269921.

It can be written as a sum of positive squares in 4 ways, for example, as 17623204 + 112338801 = 4198^2 + 10599^2 .

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

It is not a de Polignac number, because 129962005 - 2¹¹ = 129959957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129962009) 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, 316776 + ... + 317185.

It is an arithmetic number, because the mean of its divisors is an integer number (19969803).

Almost surely, 2^129962005 is an apocalyptic number.

It is an amenable number.

129962005 is a deficient number, since it is larger than the sum of its proper divisors (29796419).

129962005 is an equidigital number, since it uses as much as digits as its factorization.

129962005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634007.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 129962005 is about 11400.0879382573. The cubic root of 129962005 is about 506.5303445480.

The spelling of 129962005 in words is "one hundred twenty-nine million, nine hundred sixty-two thousand, five".