6430427 has 2 divisors, whose sum is σ = 6430428. Its totient is φ = 6430426.

The previous prime is 6430381. The next prime is 6430429. The reversal of 6430427 is 7240346.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6430427 is a prime.

Together with 6430429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6430396 and 6430405.

It is not a weakly prime, because it can be changed into another prime (6430429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215213 + 3215214.

It is an arithmetic number, because the mean of its divisors is an integer number (3215214).

Almost surely, 2^6430427 is an apocalyptic number.

6430427 is a deficient number, since it is larger than the sum of its proper divisors (1).

6430427 is an equidigital number, since it uses as much as digits as its factorization.

6430427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 6430427 is about 2535.8286614044. The cubic root of 6430427 is about 185.9573166790.

The spelling of 6430427 in words is "six million, four hundred thirty thousand, four hundred twenty-seven".