1282129993 has 4 divisors (see below), whose sum is σ = 1283103360. Its totient is φ = 1281156628.

The previous prime is 1282129931. The next prime is 1282130027. The reversal of 1282129993 is 3999212821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1282129993 - 2²¹ = 1280032841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1282129393) 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 3 ways as a sum of consecutive naturals, for example, 484705 + ... + 487342.

It is an arithmetic number, because the mean of its divisors is an integer number (320775840).

Almost surely, 2^1282129993 is an apocalyptic number.

It is an amenable number.

1282129993 is a deficient number, since it is larger than the sum of its proper divisors (973367).

1282129993 is an equidigital number, since it uses as much as digits as its factorization.

1282129993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973366.

The product of its digits is 139968, while the sum is 46.

The square root of 1282129993 is about 35806.8428236839. The cubic root of 1282129993 is about 1086.3689723112.

The spelling of 1282129993 in words is "one billion, two hundred eighty-two million, one hundred twenty-nine thousand, nine hundred ninety-three".