128294451 has 6 divisors (see below), whose sum is σ = 185314220. Its totient is φ = 85529628.

The previous prime is 128294447. The next prime is 128294471. The reversal of 128294451 is 154492821.

It is not a de Polignac number, because 128294451 - 2² = 128294447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128294471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7127461 + ... + 7127478.

Almost surely, 2^128294451 is an apocalyptic number.

128294451 is a deficient number, since it is larger than the sum of its proper divisors (57019769).

128294451 is a wasteful number, since it uses less digits than its factorization.

128294451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14254945 (or 14254942 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 128294451 is about 11326.7140424750. The cubic root of 128294451 is about 504.3545667339.

The spelling of 128294451 in words is "one hundred twenty-eight million, two hundred ninety-four thousand, four hundred fifty-one".