129454950 has 48 divisors (see below), whose sum is σ = 324689040. Its totient is φ = 34129920.

The previous prime is 129454937. The next prime is 129454957. The reversal of 129454950 is 59454921.

It is a junction number, because it is equal to n+sod(n) for n = 129454899 and 129454908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129454957) by changing a digit.

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, 8502 + ... + 18198.

It is an arithmetic number, because the mean of its divisors is an integer number (6764355).

Almost surely, 2^129454950 is an apocalyptic number.

129454950 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 129454950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162344520).

129454950 is an abundant number, since it is smaller than the sum of its proper divisors (195234090).

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

129454950 is a wasteful number, since it uses less digits than its factorization.

129454950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9801 (or 9796 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 129454950 is about 11377.8271212038. The cubic root of 129454950 is about 505.8707325484.

The spelling of 129454950 in words is "one hundred twenty-nine million, four hundred fifty-four thousand, nine hundred fifty".