1428520267 has 2 divisors, whose sum is σ = 1428520268. Its totient is φ = 1428520266.

The previous prime is 1428520253. The next prime is 1428520273. The reversal of 1428520267 is 7620258241.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7620258241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1428520267 - 2⁷ = 1428520139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1428520297) 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, 714260133 + 714260134.

It is an arithmetic number, because the mean of its divisors is an integer number (714260134).

Almost surely, 2^1428520267 is an apocalyptic number.

1428520267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428520267 is an equidigital number, since it uses as much as digits as its factorization.

1428520267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 1428520267 is about 37795.7704908896. The cubic root of 1428520267 is about 1126.2344354738.

The spelling of 1428520267 in words is "one billion, four hundred twenty-eight million, five hundred twenty thousand, two hundred sixty-seven".