129151770 has 96 divisors (see below), whose sum is σ = 348413184. Its totient is φ = 30602880.

The previous prime is 129151753. The next prime is 129151783. The reversal of 129151770 is 77151921.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 170232 + ... + 170988.

It is an arithmetic number, because the mean of its divisors is an integer number (3629304).

Almost surely, 2^129151770 is an apocalyptic number.

129151770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129151770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174206592).

129151770 is an abundant number, since it is smaller than the sum of its proper divisors (219261414).

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

129151770 is a wasteful number, since it uses less digits than its factorization.

129151770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 33.

The square root of 129151770 is about 11364.4960293011. The cubic root of 129151770 is about 505.4755119868.

It can be divided in two parts, 129151 and 770, that added together give a palindrome (129921).

The spelling of 129151770 in words is "one hundred twenty-nine million, one hundred fifty-one thousand, seven hundred seventy".