42043 has 2 divisors, whose sum is σ = 42044. Its totient is φ = 42042.

The previous prime is 42023. The next prime is 42061. The reversal of 42043 is 34024.

42043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42043 - 2¹³ = 33851 is a prime.

It is a super-2 number, since 2×42043² = 3535227698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021 + 21022.

It is an arithmetic number, because the mean of its divisors is an integer number (21022).

2⁴²⁰⁴³ is an apocalyptic number.

42043 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043 is an equidigital number, since it uses as much as digits as its factorization.

42043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 42043 is about 205.0438977390. The cubic root of 42043 is about 34.7721250334.

Adding to 42043 its reverse (34024), we get a palindrome (76067).

The spelling of 42043 in words is "forty-two thousand, forty-three", and thus it is an iban number.