129795506 has 8 divisors (see below), whose sum is σ = 196700700. Its totient is φ = 64228608.

The previous prime is 129795473. The next prime is 129795521. The reversal of 129795506 is 605597921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128618281 + 1177225 = 11341^2 + 1085^2 .

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

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, 334331 + ... + 334718.

Almost surely, 2^129795506 is an apocalyptic number.

129795506 is a deficient number, since it is larger than the sum of its proper divisors (66905194).

129795506 is an equidigital number, since it uses as much as digits as its factorization.

129795506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669148.

The product of its (nonzero) digits is 170100, while the sum is 44.

The square root of 129795506 is about 11392.7830664856. The cubic root of 129795506 is about 506.3139406918.

The spelling of 129795506 in words is "one hundred twenty-nine million, seven hundred ninety-five thousand, five hundred six".