129026144 has 48 divisors (see below), whose sum is σ = 279960912. Its totient is φ = 58157568.

The previous prime is 129026087. The next prime is 129026147. The reversal of 129026144 is 441620921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129026147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14282 + ... + 21494.

It is an arithmetic number, because the mean of its divisors is an integer number (5832519).

Almost surely, 2^129026144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129026144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139980456).

129026144 is an abundant number, since it is smaller than the sum of its proper divisors (150934768).

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

129026144 is a wasteful number, since it uses less digits than its factorization.

129026144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7279 (or 7271 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 129026144 is about 11358.9675587176. The cubic root of 129026144 is about 505.3115667130.

The spelling of 129026144 in words is "one hundred twenty-nine million, twenty-six thousand, one hundred forty-four".