129401250 has 80 divisors (see below), whose sum is σ = 352912032. Its totient is φ = 31360000.

The previous prime is 129401227. The next prime is 129401281. The reversal of 129401250 is 52104921.

It is a self number, because there is not a number n which added to its sum of digits gives 129401250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39682 + ... + 42818.

Almost surely, 2^129401250 is an apocalyptic number.

129401250 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 129401250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176456016).

129401250 is an abundant number, since it is smaller than the sum of its proper divisors (223510782).

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

129401250 is a wasteful number, since it uses less digits than its factorization.

129401250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173 (or 3158 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 129401250 is about 11375.4670233797. The cubic root of 129401250 is about 505.8007750963.

The spelling of 129401250 in words is "one hundred twenty-nine million, four hundred one thousand, two hundred fifty".