1123456727 has 2 divisors, whose sum is σ = 1123456728. Its totient is φ = 1123456726.

The previous prime is 1123456693. The next prime is 1123456729. The reversal of 1123456727 is 7276543211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123456727 - 2⁸ = 1123456471 is a prime.

Together with 1123456729, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123456729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561728363 + 561728364.

It is an arithmetic number, because the mean of its divisors is an integer number (561728364).

Almost surely, 2^1123456727 is an apocalyptic number.

1123456727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123456727 is an equidigital number, since it uses as much as digits as its factorization.

1123456727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 1123456727 is about 33518.0060116947. The cubic root of 1123456727 is about 1039.5661180136.

Adding to 1123456727 its reverse (7276543211), we get a palindrome (8399999938).

The spelling of 1123456727 in words is "one billion, one hundred twenty-three million, four hundred fifty-six thousand, seven hundred twenty-seven".