129621214 has 8 divisors (see below), whose sum is σ = 194854968. Its totient is φ = 64669560.

The previous prime is 129621187. The next prime is 129621223. The reversal of 129621214 is 412126921.

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

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 3 ways as a sum of consecutive naturals, for example, 69372 + ... + 71215.

It is an arithmetic number, because the mean of its divisors is an integer number (24356871).

Almost surely, 2^129621214 is an apocalyptic number.

129621214 is a deficient number, since it is larger than the sum of its proper divisors (65233754).

129621214 is a wasteful number, since it uses less digits than its factorization.

129621214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141050.

The product of its digits is 1728, while the sum is 28.

The square root of 129621214 is about 11385.1312684571. The cubic root of 129621214 is about 506.0872096816.

The spelling of 129621214 in words is "one hundred twenty-nine million, six hundred twenty-one thousand, two hundred fourteen".