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128043 = 3241347
BaseRepresentation
bin11111010000101011
320111122100
4133100223
513044133
62424443
71042206
oct372053
9214570
10128043
1188223
1262123
1346386
143493d
1527e13
hex1f42b

128043 has 12 divisors (see below), whose sum is σ = 190008. Its totient is φ = 83040.

The previous prime is 128033. The next prime is 128047. The reversal of 128043 is 340821.

It is a happy number.

It is not a de Polignac number, because 128043 - 26 = 127979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196 + ... + 542.

It is an arithmetic number, because the mean of its divisors is an integer number (15834).

2128043 is an apocalyptic number.

128043 is a deficient number, since it is larger than the sum of its proper divisors (61965).

128043 is a wasteful number, since it uses less digits than its factorization.

128043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 128043 is about 357.8309656807. The cubic root of 128043 is about 50.4024847603.

Adding to 128043 its reverse (340821), we get a palindrome (468864).

The spelling of 128043 in words is "one hundred twenty-eight thousand, forty-three".

Divisors: 1 3 9 41 123 347 369 1041 3123 14227 42681 128043