1243068877 has 2 divisors, whose sum is σ = 1243068878. Its totient is φ = 1243068876.

The previous prime is 1243068821. The next prime is 1243068887. The reversal of 1243068877 is 7788603421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 830938276 + 412130601 = 28826^2 + 20301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243068877 is a prime.

It is a super-2 number, since 2×1243068877² = 3090440465932082258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243068887) 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 as a sum of consecutive naturals, namely, 621534438 + 621534439.

It is an arithmetic number, because the mean of its divisors is an integer number (621534439).

Almost surely, 2^1243068877 is an apocalyptic number.

It is an amenable number.

1243068877 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243068877 is an equidigital number, since it uses as much as digits as its factorization.

1243068877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 1243068877 is about 35257.1819208512. The cubic root of 1243068877 is about 1075.2226333917. Note that the first 3 decimals are identical.

The spelling of 1243068877 in words is "one billion, two hundred forty-three million, sixty-eight thousand, eight hundred seventy-seven".