129168030 has 32 divisors (see below), whose sum is σ = 320695200. Its totient is φ = 33256832.

The previous prime is 129168029. The next prime is 129168031. The reversal of 129168030 is 30861921.

It is an interprime number because it is at equal distance from previous prime (129168029) and next prime (129168031).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129168031) 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, 73365 + ... + 75104.

It is an arithmetic number, because the mean of its divisors is an integer number (10021725).

Almost surely, 2^129168030 is an apocalyptic number.

129168030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129168030 is an abundant number, since it is smaller than the sum of its proper divisors (191527170).

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

129168030 is a wasteful number, since it uses less digits than its factorization.

129168030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148508.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 129168030 is about 11365.2113926667. The cubic root of 129168030 is about 505.4967239478.

The spelling of 129168030 in words is "one hundred twenty-nine million, one hundred sixty-eight thousand, thirty".