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BaseRepresentation
bin11000011011001011
312002020022
4120123023
511200133
62051055
7564446
oct303313
9162208
10100043
1169189
1249a8b
13366c8
142865d
151e998
hex186cb

100043 has 2 divisors, whose sum is σ = 100044. Its totient is φ = 100042.

The previous prime is 100019. The next prime is 100049. The reversal of 100043 is 340001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100043 - 28 = 99787 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100043.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 100043.

It is not a weakly prime, because it can be changed into another prime (100049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50021 + 50022.

It is an arithmetic number, because the mean of its divisors is an integer number (50022).

2100043 is an apocalyptic number.

100043 is a deficient number, since it is larger than the sum of its proper divisors (1).

100043 is an equidigital number, since it uses as much as digits as its factorization.

100043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 100043 is about 316.2957476793. The cubic root of 100043 is about 46.4225403268.

Adding to 100043 its reverse (340001), we get a palindrome (440044).

The spelling of 100043 in words is "one hundred thousand, forty-three", and thus it is an iban number.