129142350 has 96 divisors (see below), whose sum is σ = 360557280. Its totient is φ = 34408800.

The previous prime is 129142331. The next prime is 129142357. The reversal of 129142350 is 53241921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129142357) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108760 + ... + 109940.

It is an arithmetic number, because the mean of its divisors is an integer number (3755805).

Almost surely, 2^129142350 is an apocalyptic number.

129142350 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 129142350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180278640).

129142350 is an abundant number, since it is smaller than the sum of its proper divisors (231414930).

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

129142350 is an equidigital number, since it uses as much as digits as its factorization.

129142350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 129142350 is about 11364.0815730969. The cubic root of 129142350 is about 505.4632223241.

The spelling of 129142350 in words is "one hundred twenty-nine million, one hundred forty-two thousand, three hundred fifty".