128454 has 16 divisors (see below), whose sum is σ = 261120. Its totient is φ = 42120.

The previous prime is 128449. The next prime is 128461. The reversal of 128454 is 454821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339 + ... + 609.

It is an arithmetic number, because the mean of its divisors is an integer number (16320).

2¹²⁸⁴⁵⁴ is an apocalyptic number.

128454 is an abundant number, since it is smaller than the sum of its proper divisors (132666).

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

128454 is a wasteful number, since it uses less digits than its factorization.

128454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355.

The product of its digits is 1280, while the sum is 24.

The square root of 128454 is about 358.4047990750. The cubic root of 128454 is about 50.4563554552.

The spelling of 128454 in words is "one hundred twenty-eight thousand, four hundred fifty-four".