423427 has 2 divisors, whose sum is σ = 423428. Its totient is φ = 423426.

The previous prime is 423413. The next prime is 423431. The reversal of 423427 is 724324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423427 - 2⁷ = 423299 is a prime.

423427 is a lucky number.

It is equal to p₃₅₆₅₃ and since 423427 and 35653 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 423398 and 423407.

It is not a weakly prime, because it can be changed into another prime (423457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211713 + 211714.

It is an arithmetic number, because the mean of its divisors is an integer number (211714).

2⁴²³⁴²⁷ is an apocalyptic number.

423427 is a deficient number, since it is larger than the sum of its proper divisors (1).

423427 is an equidigital number, since it uses as much as digits as its factorization.

423427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 22.

The square root of 423427 is about 650.7126862141. The cubic root of 423427 is about 75.0918578197.

The spelling of 423427 in words is "four hundred twenty-three thousand, four hundred twenty-seven", and thus it is an iban number.