1243102663 has 4 divisors (see below), whose sum is σ = 1356112008. Its totient is φ = 1130093320.

The previous prime is 1243102633. The next prime is 1243102733. The reversal of 1243102663 is 3662013421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3662013421 = 11 ⋅332910311.

It is a cyclic number.

It is not a de Polignac number, because 1243102663 - 2²¹ = 1241005511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243102633) 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, 56504656 + ... + 56504677.

It is an arithmetic number, because the mean of its divisors is an integer number (339028002).

Almost surely, 2^1243102663 is an apocalyptic number.

1243102663 is a deficient number, since it is larger than the sum of its proper divisors (113009345).

1243102663 is a wasteful number, since it uses less digits than its factorization.

1243102663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113009344.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1243102663 is about 35257.6610540177. The cubic root of 1243102663 is about 1075.2323746440.

The spelling of 1243102663 in words is "one billion, two hundred forty-three million, one hundred two thousand, six hundred sixty-three".