428336123 has 2 divisors, whose sum is σ = 428336124. Its totient is φ = 428336122.

The previous prime is 428336059. The next prime is 428336137. The reversal of 428336123 is 321633824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428336123 - 2⁶ = 428336059 is a prime.

It is a super-2 number, since 2×428336123² = 366943668533342258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 428336123.

It is not a weakly prime, because it can be changed into another prime (428336173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214168061 + 214168062.

It is an arithmetic number, because the mean of its divisors is an integer number (214168062).

Almost surely, 2^428336123 is an apocalyptic number.

428336123 is a deficient number, since it is larger than the sum of its proper divisors (1).

428336123 is an equidigital number, since it uses as much as digits as its factorization.

428336123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 428336123 is about 20696.2828304988. The cubic root of 428336123 is about 753.8094318422.

Adding to 428336123 its reverse (321633824), we get a palindrome (749969947).

The spelling of 428336123 in words is "four hundred twenty-eight million, three hundred thirty-six thousand, one hundred twenty-three".