129224470 has 16 divisors (see below), whose sum is σ = 232792560. Its totient is φ = 51647904.

The previous prime is 129224423. The next prime is 129224477. The reversal of 129224470 is 74422921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129224477) 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 7 ways as a sum of consecutive naturals, for example, 9769 + ... + 18811.

It is an arithmetic number, because the mean of its divisors is an integer number (14549535).

Almost surely, 2^129224470 is an apocalyptic number.

129224470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129224470 is a deficient number, since it is larger than the sum of its proper divisors (103568090).

129224470 is a wasteful number, since it uses less digits than its factorization.

129224470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10479.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 129224470 is about 11367.6941373350. The cubic root of 129224470 is about 505.5703388629.

The spelling of 129224470 in words is "one hundred twenty-nine million, two hundred twenty-four thousand, four hundred seventy".