129427300 has 18 divisors (see below), whose sum is σ = 280857458. Its totient is φ = 51770880.

The previous prime is 129427253. The next prime is 129427301. The reversal of 129427300 is 3724921.

It can be written as a sum of positive squares in 3 ways, for example, as 13924 + 129413376 = 118^2 + 11376^2 .

It is not an unprimeable number, because it can be changed into a prime (129427301) 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 5 ways as a sum of consecutive naturals, for example, 647037 + ... + 647236.

Almost surely, 2^129427300 is an apocalyptic number.

129427300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129427300 is an abundant number, since it is smaller than the sum of its proper divisors (151430158).

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

129427300 is a wasteful number, since it uses less digits than its factorization.

129427300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294287 (or 1294280 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 129427300 is about 11376.6119736941. The cubic root of 129427300 is about 505.8347140423.

The spelling of 129427300 in words is "one hundred twenty-nine million, four hundred twenty-seven thousand, three hundred".