1428243412 has 24 divisors (see below), whose sum is σ = 2512181000. Its totient is φ = 710487936.

The previous prime is 1428243403. The next prime is 1428243419. The reversal of 1428243412 is 2143428241.

It can be written as a sum of positive squares in 4 ways, for example, as 39488656 + 1388754756 = 6284^2 + 37266^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428243419) 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 in 7 ways as a sum of consecutive naturals, for example, 854914 + ... + 856582.

Almost surely, 2^1428243412 is an apocalyptic number.

It is an amenable number.

1428243412 is a deficient number, since it is larger than the sum of its proper divisors (1083937588).

1428243412 is a wasteful number, since it uses less digits than its factorization.

1428243412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635 (or 2633 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

The square root of 1428243412 is about 37792.1078004390. The cubic root of 1428243412 is about 1126.1616739860.

The spelling of 1428243412 in words is "one billion, four hundred twenty-eight million, two hundred forty-three thousand, four hundred twelve".