4128427 has 2 divisors, whose sum is σ = 4128428. Its totient is φ = 4128426.

The previous prime is 4128409. The next prime is 4128451. The reversal of 4128427 is 7248214.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4128427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4128395 and 4128404.

It is not a weakly prime, because it can be changed into another prime (4128827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2064213 + 2064214.

It is an arithmetic number, because the mean of its divisors is an integer number (2064214).

Almost surely, 2^4128427 is an apocalyptic number.

4128427 is a deficient number, since it is larger than the sum of its proper divisors (1).

4128427 is an equidigital number, since it uses as much as digits as its factorization.

4128427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 28.

The square root of 4128427 is about 2031.8530950834. The cubic root of 4128427 is about 160.4211172169.

The spelling of 4128427 in words is "four million, one hundred twenty-eight thousand, four hundred twenty-seven".