129082140 has 192 divisors, whose sum is σ = 452874240. Its totient is φ = 30240000.

The previous prime is 129082123. The next prime is 129082157. The reversal of 129082140 is 41280921.

It is an interprime number because it is at equal distance from previous prime (129082123) and next prime (129082157).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183790 + ... + 184490.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^129082140 is an apocalyptic number.

129082140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129082140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226437120).

129082140 is an abundant number, since it is smaller than the sum of its proper divisors (323792100).

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

129082140 is a wasteful number, since it uses less digits than its factorization.

129082140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 129082140 is about 11361.4321280374. The cubic root of 129082140 is about 505.3846561228.

The spelling of 129082140 in words is "one hundred twenty-nine million, eighty-two thousand, one hundred forty".