428124127 has 2 divisors, whose sum is σ = 428124128. Its totient is φ = 428124126.

The previous prime is 428124121. The next prime is 428124149. The reversal of 428124127 is 721421824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428124127 - 2¹⁹ = 427599839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428124121) 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, 214062063 + 214062064.

It is an arithmetic number, because the mean of its divisors is an integer number (214062064).

Almost surely, 2^428124127 is an apocalyptic number.

428124127 is a deficient number, since it is larger than the sum of its proper divisors (1).

428124127 is an equidigital number, since it uses as much as digits as its factorization.

428124127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 31.

The square root of 428124127 is about 20691.1606006043. The cubic root of 428124127 is about 753.6850505857.

The spelling of 428124127 in words is "four hundred twenty-eight million, one hundred twenty-four thousand, one hundred twenty-seven".