1123427 has 2 divisors, whose sum is σ = 1123428. Its totient is φ = 1123426.

The previous prime is 1123403. The next prime is 1123429. The reversal of 1123427 is 7243211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123427 is a prime.

Together with 1123429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123399 and 1123408.

It is not a weakly prime, because it can be changed into another prime (1123429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561713 + 561714.

It is an arithmetic number, because the mean of its divisors is an integer number (561714).

2^1123427 is an apocalyptic number.

1123427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123427 is an equidigital number, since it uses as much as digits as its factorization.

1123427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 20.

The square root of 1123427 is about 1059.9183930851. The cubic root of 1123427 is about 103.9556948856.

Adding to 1123427 its reverse (7243211), we get a palindrome (8366638).

The spelling of 1123427 in words is "one million, one hundred twenty-three thousand, four hundred twenty-seven".