129602973 has 4 divisors (see below), whose sum is σ = 172803968. Its totient is φ = 86401980.

The previous prime is 129602969. The next prime is 129603007. The reversal of 129602973 is 379206921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 129602973 - 2² = 129602969 is a prime.

It is a super-2 number, since 2×129602973² = 33593861220877458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129602873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21600493 + ... + 21600498.

It is an arithmetic number, because the mean of its divisors is an integer number (43200992).

Almost surely, 2^129602973 is an apocalyptic number.

It is an amenable number.

129602973 is a deficient number, since it is larger than the sum of its proper divisors (43200995).

129602973 is an equidigital number, since it uses as much as digits as its factorization.

129602973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43200994.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 129602973 is about 11384.3301515724. The cubic root of 129602973 is about 506.0634687893.

The spelling of 129602973 in words is "one hundred twenty-nine million, six hundred two thousand, nine hundred seventy-three".