129314780 has 48 divisors (see below), whose sum is σ = 312270336. Its totient is φ = 44063040.

The previous prime is 129314771. The next prime is 129314789. The reversal of 129314780 is 87413921.

It is an interprime number because it is at equal distance from previous prime (129314771) and next prime (129314789).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 129314780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129314789) 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, 20615 + ... + 26145.

It is an arithmetic number, because the mean of its divisors is an integer number (6505632).

Almost surely, 2^129314780 is an apocalyptic number.

129314780 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 129314780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156135168).

129314780 is an abundant number, since it is smaller than the sum of its proper divisors (182955556).

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

129314780 is a wasteful number, since it uses less digits than its factorization.

129314780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5714 (or 5712 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 129314780 is about 11371.6656651521. The cubic root of 129314780 is about 505.6880859770.

The spelling of 129314780 in words is "one hundred twenty-nine million, three hundred fourteen thousand, seven hundred eighty".