129427512 has 32 divisors (see below), whose sum is σ = 323930880. Its totient is φ = 43094240.

The previous prime is 129427481. The next prime is 129427523. The reversal of 129427512 is 215724921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23713 + ... + 28655.

It is an arithmetic number, because the mean of its divisors is an integer number (10122840).

Almost surely, 2^129427512 is an apocalyptic number.

129427512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129427512 is an abundant number, since it is smaller than the sum of its proper divisors (194503368).

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

129427512 is a wasteful number, since it uses less digits than its factorization.

129427512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043 (or 6039 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 129427512 is about 11376.6212910512. The cubic root of 129427512 is about 505.8349902254.

The spelling of 129427512 in words is "one hundred twenty-nine million, four hundred twenty-seven thousand, five hundred twelve".