129422368 has 12 divisors (see below), whose sum is σ = 254800350. Its totient is φ = 64711168.

The previous prime is 129422351. The next prime is 129422383. The reversal of 129422368 is 863224921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 109244304 + 20178064 = 10452^2 + 4492^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022193 + ... + 2022256.

Almost surely, 2^129422368 is an apocalyptic number.

It is an amenable number.

129422368 is a deficient number, since it is larger than the sum of its proper divisors (125377982).

129422368 is an equidigital number, since it uses as much as digits as its factorization.

129422368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044459 (or 4044451 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 129422368 is about 11376.3952111378. The cubic root of 129422368 is about 505.8282887917.

The spelling of 129422368 in words is "one hundred twenty-nine million, four hundred twenty-two thousand, three hundred sixty-eight".