129923130 has 32 divisors (see below), whose sum is σ = 313170624. Its totient is φ = 34495616.

The previous prime is 129923119. The next prime is 129923147. The reversal of 129923130 is 31329921.

It is a happy number.

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

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 15 ways as a sum of consecutive naturals, for example, 2304 + ... + 16283.

It is an arithmetic number, because the mean of its divisors is an integer number (9786582).

Almost surely, 2^129923130 is an apocalyptic number.

129923130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129923130 is an abundant number, since it is smaller than the sum of its proper divisors (183247494).

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

129923130 is a wasteful number, since it uses less digits than its factorization.

129923130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18830.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 129923130 is about 11398.3827800263. The cubic root of 129923130 is about 506.4798340651.

The spelling of 129923130 in words is "one hundred twenty-nine million, nine hundred twenty-three thousand, one hundred thirty".