129229050 has 48 divisors (see below), whose sum is σ = 322345440. Its totient is φ = 34261440.

The previous prime is 129229043. The next prime is 129229063. The reversal of 129229050 is 50922921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 129228999 and 129229017.

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 23 ways as a sum of consecutive naturals, for example, 24444 + ... + 29256.

It is an arithmetic number, because the mean of its divisors is an integer number (6715530).

Almost surely, 2^129229050 is an apocalyptic number.

129229050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129229050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161172720).

129229050 is an abundant number, since it is smaller than the sum of its proper divisors (193116390).

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

129229050 is a wasteful number, since it uses less digits than its factorization.

129229050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007 (or 5002 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 129229050 is about 11367.8955836162. The cubic root of 129229050 is about 505.5763116347.

The spelling of 129229050 in words is "one hundred twenty-nine million, two hundred twenty-nine thousand, fifty".