128254461 has 8 divisors (see below), whose sum is σ = 171162720. Its totient is φ = 85424592.

The previous prime is 128254459. The next prime is 128254487. The reversal of 128254461 is 164452821.

It is a happy number.

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

It is not a de Polignac number, because 128254461 - 2¹ = 128254459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128254411) 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, 15666 + ... + 22403.

It is an arithmetic number, because the mean of its divisors is an integer number (21395340).

Almost surely, 2^128254461 is an apocalyptic number.

It is an amenable number.

128254461 is a deficient number, since it is larger than the sum of its proper divisors (42908259).

128254461 is a wasteful number, since it uses less digits than its factorization.

128254461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39195.

The product of its digits is 15360, while the sum is 33.

The square root of 128254461 is about 11324.9486091549. The cubic root of 128254461 is about 504.3021580368.

The spelling of 128254461 in words is "one hundred twenty-eight million, two hundred fifty-four thousand, four hundred sixty-one".