129381962 has 8 divisors (see below), whose sum is σ = 194140800. Its totient is φ = 64668364.

The previous prime is 129381961. The next prime is 129381971. The reversal of 129381962 is 269183921.

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

It is not an unprimeable number, because it can be changed into a prime (129381961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2912 + ... + 16347.

It is an arithmetic number, because the mean of its divisors is an integer number (24267600).

Almost surely, 2^129381962 is an apocalyptic number.

129381962 is a deficient number, since it is larger than the sum of its proper divisors (64758838).

129381962 is a wasteful number, since it uses less digits than its factorization.

129381962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22620.

The product of its digits is 46656, while the sum is 41.

The square root of 129381962 is about 11374.6192024173. The cubic root of 129381962 is about 505.7756430100.

The spelling of 129381962 in words is "one hundred twenty-nine million, three hundred eighty-one thousand, nine hundred sixty-two".