129489050 has 24 divisors (see below), whose sum is σ = 241205916. Its totient is φ = 51719040.

The previous prime is 129489043. The next prime is 129489067. The reversal of 129489050 is 50984921.

It can be written as a sum of positive squares in 6 ways, for example, as 91948921 + 37540129 = 9589^2 + 6127^2 .

It is a junction number, because it is equal to n+sod(n) for n = 129488995 and 129489013.

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 11 ways as a sum of consecutive naturals, for example, 42374 + ... + 45326.

Almost surely, 2^129489050 is an apocalyptic number.

129489050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129489050 is a deficient number, since it is larger than the sum of its proper divisors (111716866).

129489050 is a wasteful number, since it uses less digits than its factorization.

129489050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842 (or 3837 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 129489050 is about 11379.3255511915. The cubic root of 129489050 is about 505.9151461393.

The spelling of 129489050 in words is "one hundred twenty-nine million, four hundred eighty-nine thousand, fifty".