129982040 has 32 divisors (see below), whose sum is σ = 307854000. Its totient is φ = 49256064.

The previous prime is 129982007. The next prime is 129982057. The reversal of 129982040 is 40289921.

129982040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 84755 + ... + 86274.

Almost surely, 2^129982040 is an apocalyptic number.

129982040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129982040 is an abundant number, since it is smaller than the sum of its proper divisors (177871960).

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

129982040 is a wasteful number, since it uses less digits than its factorization.

129982040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171059 (or 171055 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 129982040 is about 11400.9666256857. The cubic root of 129982040 is about 506.5563721910.

The spelling of 129982040 in words is "one hundred twenty-nine million, nine hundred eighty-two thousand, forty".