129954129 has 8 divisors (see below), whose sum is σ = 182391840. Its totient is φ = 82076256.

The previous prime is 129954109. The next prime is 129954193. The reversal of 129954129 is 921459921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129954129 - 2¹⁹ = 129429841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129954109) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1139892 + ... + 1140005.

It is an arithmetic number, because the mean of its divisors is an integer number (22798980).

Almost surely, 2^129954129 is an apocalyptic number.

129954129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

129954129 is a deficient number, since it is larger than the sum of its proper divisors (52437711).

129954129 is a wasteful number, since it uses less digits than its factorization.

129954129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279919.

The product of its digits is 58320, while the sum is 42.

The square root of 129954129 is about 11399.7424970918. The cubic root of 129954129 is about 506.5201120353.

The spelling of 129954129 in words is "one hundred twenty-nine million, nine hundred fifty-four thousand, one hundred twenty-nine".