129941712 has 80 divisors (see below), whose sum is σ = 379172160. Its totient is φ = 42595200.

The previous prime is 129941711. The next prime is 129941719. The reversal of 129941712 is 217149921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129941711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23887 + ... + 28817.

It is an arithmetic number, because the mean of its divisors is an integer number (4739652).

Almost surely, 2^129941712 is an apocalyptic number.

129941712 is a gapful number since it is divisible by the number (12) 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 129941712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189586080).

129941712 is an abundant number, since it is smaller than the sum of its proper divisors (249230448).

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

129941712 is a wasteful number, since it uses less digits than its factorization.

129941712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5009 (or 4997 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 129941712 is about 11399.1978665167. The cubic root of 129941712 is about 506.5039790079.

It can be divided in two parts, 12994 and 1712, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 129941712 in words is "one hundred twenty-nine million, nine hundred forty-one thousand, seven hundred twelve".