129972335 has 8 divisors (see below), whose sum is σ = 156523536. Its totient is φ = 103606720.

The previous prime is 129972329. The next prime is 129972341. The reversal of 129972335 is 533279921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (129972329) and next prime (129972341).

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

It is not a de Polignac number, because 129972335 - 2⁴ = 129972319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129972292 and 129972301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44849 + ... + 47658.

It is an arithmetic number, because the mean of its divisors is an integer number (19565442).

Almost surely, 2^129972335 is an apocalyptic number.

129972335 is a deficient number, since it is larger than the sum of its proper divisors (26551201).

129972335 is an equidigital number, since it uses as much as digits as its factorization.

129972335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92793.

The product of its digits is 102060, while the sum is 41.

The square root of 129972335 is about 11400.5409959352. The cubic root of 129972335 is about 506.5437646750.

The spelling of 129972335 in words is "one hundred twenty-nine million, nine hundred seventy-two thousand, three hundred thirty-five".