129907422 has 64 divisors (see below), whose sum is σ = 302469120. Its totient is φ = 41277600.

The previous prime is 129907417. The next prime is 129907433. The reversal of 129907422 is 224709921.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 31 ways as a sum of consecutive naturals, for example, 118308 + ... + 119400.

It is an arithmetic number, because the mean of its divisors is an integer number (4726080).

Almost surely, 2^129907422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129907422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151234560).

129907422 is an abundant number, since it is smaller than the sum of its proper divisors (172561698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129907422 is a wasteful number, since it uses less digits than its factorization.

129907422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 129907422 is about 11397.6937140809. The cubic root of 129907422 is about 506.4594217237.

The spelling of 129907422 in words is "one hundred twenty-nine million, nine hundred seven thousand, four hundred twenty-two".