43427 has 2 divisors, whose sum is σ = 43428. Its totient is φ = 43426.

The previous prime is 43411. The next prime is 43441. The reversal of 43427 is 72434.

It is a happy number.

43427 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 43427 - 2⁴ = 43411 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 43399 and 43408.

It is not a weakly prime, because it can be changed into another prime (43457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21713 + 21714.

It is an arithmetic number, because the mean of its divisors is an integer number (21714).

2⁴³⁴²⁷ is an apocalyptic number.

43427 is a deficient number, since it is larger than the sum of its proper divisors (1).

43427 is an equidigital number, since it uses as much as digits as its factorization.

43427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 20.

The square root of 43427 is about 208.3914585582. The cubic root of 43427 is about 35.1495640454.

The spelling of 43427 in words is "forty-three thousand, four hundred twenty-seven", and thus it is an iban number.