1282320543 has 24 divisors (see below), whose sum is σ = 2008620720. Its totient is φ = 725491200.

The previous prime is 1282320527. The next prime is 1282320547. The reversal of 1282320543 is 3450232821.

It is not a de Polignac number, because 1282320543 - 2⁴ = 1282320527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1282320543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282320547) 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 in 23 ways as a sum of consecutive naturals, for example, 28338 + ... + 58031.

It is an arithmetic number, because the mean of its divisors is an integer number (83692530).

Almost surely, 2^1282320543 is an apocalyptic number.

1282320543 is a deficient number, since it is larger than the sum of its proper divisors (726300177).

1282320543 is a wasteful number, since it uses less digits than its factorization.

1282320543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86487 (or 86480 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1282320543 is about 35809.5035290913. The cubic root of 1282320543 is about 1086.4227883191.

The spelling of 1282320543 in words is "one billion, two hundred eighty-two million, three hundred twenty thousand, five hundred forty-three".