129254684 has 12 divisors (see below), whose sum is σ = 243595464. Its totient is φ = 59655984.

The previous prime is 129254683. The next prime is 129254729. The reversal of 129254684 is 486452921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129254683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1242782 + ... + 1242885.

It is an arithmetic number, because the mean of its divisors is an integer number (20299622).

Almost surely, 2^129254684 is an apocalyptic number.

It is an amenable number.

129254684 is a deficient number, since it is larger than the sum of its proper divisors (114340780).

129254684 is a wasteful number, since it uses less digits than its factorization.

129254684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485684 (or 2485682 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 129254684 is about 11369.0230011202. The cubic root of 129254684 is about 505.6097382942.

The spelling of 129254684 in words is "one hundred twenty-nine million, two hundred fifty-four thousand, six hundred eighty-four".