129154904 has 8 divisors (see below), whose sum is σ = 242165460. Its totient is φ = 64577448.

The previous prime is 129154891. The next prime is 129154937. The reversal of 129154904 is 409451921.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 8072174 + ... + 8072189.

Almost surely, 2^129154904 is an apocalyptic number.

It is an amenable number.

129154904 is a deficient number, since it is larger than the sum of its proper divisors (113010556).

129154904 is a wasteful number, since it uses less digits than its factorization.

129154904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16144369 (or 16144365 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 129154904 is about 11364.6339140335. The cubic root of 129154904 is about 505.4796005808.

The spelling of 129154904 in words is "one hundred twenty-nine million, one hundred fifty-four thousand, nine hundred four".