129940950 has 48 divisors (see below), whose sum is σ = 323122176. Its totient is φ = 34557600.

The previous prime is 129940913. The next prime is 129940973. The reversal of 129940950 is 59049921.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129940899 and 129940908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68515 + ... + 70385.

It is an arithmetic number, because the mean of its divisors is an integer number (6731712).

Almost surely, 2^129940950 is an apocalyptic number.

129940950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129940950 is an abundant number, since it is smaller than the sum of its proper divisors (193181226).

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

129940950 is a wasteful number, since it uses less digits than its factorization.

129940950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349 (or 2344 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 129940950 is about 11399.1644430634. The cubic root of 129940950 is about 506.5029889312.

The spelling of 129940950 in words is "one hundred twenty-nine million, nine hundred forty thousand, nine hundred fifty".