129441670 has 16 divisors (see below), whose sum is σ = 233558640. Its totient is φ = 51651424.

The previous prime is 129441667. The next prime is 129441707. The reversal of 129441670 is 76144921.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 11257 + ... + 19636.

It is an arithmetic number, because the mean of its divisors is an integer number (14597415).

Almost surely, 2^129441670 is an apocalyptic number.

129441670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129441670 is a deficient number, since it is larger than the sum of its proper divisors (104116970).

129441670 is a wasteful number, since it uses less digits than its factorization.

129441670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31319.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 129441670 is about 11377.2435150172. The cubic root of 129441670 is about 505.8534338843.

The spelling of 129441670 in words is "one hundred twenty-nine million, four hundred forty-one thousand, six hundred seventy".