129148000 has 96 divisors (see below), whose sum is σ = 321965280. Its totient is φ = 50905600.

The previous prime is 129147979. The next prime is 129148007. The reversal of 129148000 is 841921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129148007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331806 + ... + 332194.

It is an arithmetic number, because the mean of its divisors is an integer number (3353805).

Almost surely, 2^129148000 is an apocalyptic number.

129148000 is a gapful number since it is divisible by the number (10) 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 129148000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160982640).

129148000 is an abundant number, since it is smaller than the sum of its proper divisors (192817280).

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

129148000 is an equidigital number, since it uses as much as digits as its factorization.

129148000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 129148000 is about 11364.3301606386. The cubic root of 129148000 is about 505.4705935842.

Adding to 129148000 its reverse (841921), we get a palindrome (129989921).

The spelling of 129148000 in words is "one hundred twenty-nine million, one hundred forty-eight thousand".