129154254 has 32 divisors (see below), whose sum is σ = 264363264. Its totient is φ = 42053760.

The previous prime is 129154247. The next prime is 129154279. The reversal of 129154254 is 452451921.

It is a Curzon number.

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 in 15 ways as a sum of consecutive naturals, for example, 46797 + ... + 49479.

It is an arithmetic number, because the mean of its divisors is an integer number (8261352).

Almost surely, 2^129154254 is an apocalyptic number.

129154254 is an abundant number, since it is smaller than the sum of its proper divisors (135209010).

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

129154254 is a wasteful number, since it uses less digits than its factorization.

129154254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872.

The product of its digits is 14400, while the sum is 33.

The square root of 129154254 is about 11364.6053165079. The cubic root of 129154254 is about 505.4787526009.

The spelling of 129154254 in words is "one hundred twenty-nine million, one hundred fifty-four thousand, two hundred fifty-four".