129797722 has 8 divisors (see below), whose sum is σ = 194911200. Its totient is φ = 64827324.

The previous prime is 129797719. The next prime is 129797753. The reversal of 129797722 is 227797921.

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, 33472 + ... + 37147.

It is an arithmetic number, because the mean of its divisors is an integer number (24363900).

Almost surely, 2^129797722 is an apocalyptic number.

129797722 is a deficient number, since it is larger than the sum of its proper divisors (65113478).

129797722 is an equidigital number, since it uses as much as digits as its factorization.

129797722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71540.

The product of its digits is 222264, while the sum is 46.

The square root of 129797722 is about 11392.8803206213. The cubic root of 129797722 is about 506.3168221097.

The spelling of 129797722 in words is "one hundred twenty-nine million, seven hundred ninety-seven thousand, seven hundred twenty-two".