129150805 has 16 divisors (see below), whose sum is σ = 182836224. Its totient is φ = 85703040.

The previous prime is 129150803. The next prime is 129150811. The reversal of 129150805 is 508051921.

It is not a de Polignac number, because 129150805 - 2¹ = 129150803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129150803) 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 15 ways as a sum of consecutive naturals, for example, 58432 + ... + 60601.

It is an arithmetic number, because the mean of its divisors is an integer number (11427264).

Almost surely, 2^129150805 is an apocalyptic number.

It is an amenable number.

129150805 is a deficient number, since it is larger than the sum of its proper divisors (53685419).

129150805 is a wasteful number, since it uses less digits than its factorization.

129150805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119076.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 129150805 is about 11364.4535724337. The cubic root of 129150805 is about 505.4742530414.

The spelling of 129150805 in words is "one hundred twenty-nine million, one hundred fifty thousand, eight hundred five".