129501330 has 32 divisors (see below), whose sum is σ = 355204224. Its totient is φ = 29600256.

The previous prime is 129501311. The next prime is 129501341. The reversal of 129501330 is 33105921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 129501330.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 308127 + ... + 308546.

It is an arithmetic number, because the mean of its divisors is an integer number (11100132).

Almost surely, 2^129501330 is an apocalyptic number.

129501330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129501330 is an abundant number, since it is smaller than the sum of its proper divisors (225702894).

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

129501330 is a wasteful number, since it uses less digits than its factorization.

129501330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616690.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 129501330 is about 11379.8651134361. The cubic root of 129501330 is about 505.9311383322.

The spelling of 129501330 in words is "one hundred twenty-nine million, five hundred one thousand, three hundred thirty".