129153750 has 160 divisors (see below), whose sum is σ = 367082496. Its totient is φ = 30000000.

The previous prime is 129153737. The next prime is 129153767. The reversal of 129153750 is 57351921.

It is a super-2 number, since 2×129153750² = 33361382278125000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 1278700 + ... + 1278800.

Almost surely, 2^129153750 is an apocalyptic number.

129153750 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 129153750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183541248).

129153750 is an abundant number, since it is smaller than the sum of its proper divisors (237928746).

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

129153750 is a wasteful number, since it uses less digits than its factorization.

129153750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 129153750 is about 11364.5831423770. The cubic root of 129153750 is about 505.4780950884.

The spelling of 129153750 in words is "one hundred twenty-nine million, one hundred fifty-three thousand, seven hundred fifty".