128654429 has 8 divisors (see below), whose sum is σ = 131801088. Its totient is φ = 125541360.

The previous prime is 128654363. The next prime is 128654437. The reversal of 128654429 is 924456821.

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

It is a cyclic number.

It is not a de Polignac number, because 128654429 - 2⁸ = 128654173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128657429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557 + ... + 16050.

It is an arithmetic number, because the mean of its divisors is an integer number (16475136).

Almost surely, 2^128654429 is an apocalyptic number.

It is an amenable number.

128654429 is a deficient number, since it is larger than the sum of its proper divisors (3146659).

128654429 is a wasteful number, since it uses less digits than its factorization.

128654429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16795.

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

The square root of 128654429 is about 11342.5935746636. The cubic root of 128654429 is about 504.8258445972.

The spelling of 128654429 in words is "one hundred twenty-eight million, six hundred fifty-four thousand, four hundred twenty-nine".