1428428429 has 2 divisors, whose sum is σ = 1428428430. Its totient is φ = 1428428428.

The previous prime is 1428428381. The next prime is 1428428431. The reversal of 1428428429 is 9248248241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1416016900 + 12411529 = 37630^2 + 3523^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428428429 - 2¹⁶ = 1428362893 is a prime.

Together with 1428428431, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1428428429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428428459) 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, 714214214 + 714214215.

It is an arithmetic number, because the mean of its divisors is an integer number (714214215).

Almost surely, 2^1428428429 is an apocalyptic number.

It is an amenable number.

1428428429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428428429 is an equidigital number, since it uses as much as digits as its factorization.

1428428429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294912, while the sum is 44.

The square root of 1428428429 is about 37794.5555470626. Note that the first 4 decimals coincide. The cubic root of 1428428429 is about 1126.2103001647.

The spelling of 1428428429 in words is "one billion, four hundred twenty-eight million, four hundred twenty-eight thousand, four hundred twenty-nine".