129623214 has 64 divisors (see below), whose sum is σ = 316477440. Its totient is φ = 34594560.

The previous prime is 129623189. The next prime is 129623233. The reversal of 129623214 is 412326921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36042 + ... + 39474.

It is an arithmetic number, because the mean of its divisors is an integer number (4944960).

Almost surely, 2^129623214 is an apocalyptic number.

129623214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129623214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158238720).

129623214 is an abundant number, since it is smaller than the sum of its proper divisors (186854226).

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

129623214 is a wasteful number, since it uses less digits than its factorization.

129623214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505.

The product of its digits is 5184, while the sum is 30.

The square root of 129623214 is about 11385.2191019760. The cubic root of 129623214 is about 506.0898125715.

The spelling of 129623214 in words is "one hundred twenty-nine million, six hundred twenty-three thousand, two hundred fourteen".