129926076 has 48 divisors (see below), whose sum is σ = 348445440. Its totient is φ = 36910080.

The previous prime is 129926033. The next prime is 129926077. The reversal of 129926076 is 670629921.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129926077) 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 15 ways as a sum of consecutive naturals, for example, 10716 + ... + 19356.

It is an arithmetic number, because the mean of its divisors is an integer number (7259280).

Almost surely, 2^129926076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129926076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174222720).

129926076 is an abundant number, since it is smaller than the sum of its proper divisors (218519364).

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

129926076 is a wasteful number, since it uses less digits than its factorization.

129926076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8834 (or 8832 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 129926076 is about 11398.5120081526. The cubic root of 129926076 is about 506.4836621705.

The spelling of 129926076 in words is "one hundred twenty-nine million, nine hundred twenty-six thousand, seventy-six".