1284590252243 has 4 divisors (see below), whose sum is σ = 1289365680960. Its totient is φ = 1279814823528.

The previous prime is 1284590252191. The next prime is 1284590252293. The reversal of 1284590252243 is 3422520954821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1284590252243 - 2²⁸ = 1284321816787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1284590252293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2387713955 + ... + 2387714492.

It is an arithmetic number, because the mean of its divisors is an integer number (322341420240).

Almost surely, 2^{1284590252243} is an apocalyptic number.

1284590252243 is a deficient number, since it is larger than the sum of its proper divisors (4775428717).

1284590252243 is an equidigital number, since it uses as much as digits as its factorization.

1284590252243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775428716.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 1284590252243 in words is "one trillion, two hundred eighty-four billion, five hundred ninety million, two hundred fifty-two thousand, two hundred forty-three".