129069468 has 144 divisors (see below), whose sum is σ = 382427136. Its totient is φ = 36305280.

The previous prime is 129069467. The next prime is 129069487. The reversal of 129069468 is 864960921.

It is a happy number.

129069468 is a `hidden beast` number, since 129 + 0 + 69 + 468 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129069467) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 336805 + ... + 337187.

It is an arithmetic number, because the mean of its divisors is an integer number (2655744).

Almost surely, 2^129069468 is an apocalyptic number.

129069468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129069468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191213568).

129069468 is an abundant number, since it is smaller than the sum of its proper divisors (253357668).

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

129069468 is a wasteful number, since it uses less digits than its factorization.

129069468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 129069468 is about 11360.8744381760. The cubic root of 129069468 is about 505.3681177028.

The spelling of 129069468 in words is "one hundred twenty-nine million, sixty-nine thousand, four hundred sixty-eight".