129463720 has 32 divisors (see below), whose sum is σ = 306626400. Its totient is φ = 49059648.

The previous prime is 129463679. The next prime is 129463729. The reversal of 129463720 is 27364921.

It is not an unprimeable number, because it can be changed into a prime (129463729) 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, 84414 + ... + 85933.

It is an arithmetic number, because the mean of its divisors is an integer number (9582075).

Almost surely, 2^129463720 is an apocalyptic number.

129463720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129463720 is an abundant number, since it is smaller than the sum of its proper divisors (177162680).

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

129463720 is a wasteful number, since it uses less digits than its factorization.

129463720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170377 (or 170373 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 129463720 is about 11378.2125133959. The cubic root of 129463720 is about 505.8821557916.

The spelling of 129463720 in words is "one hundred twenty-nine million, four hundred sixty-three thousand, seven hundred twenty".