1123439 has 2 divisors, whose sum is σ = 1123440. Its totient is φ = 1123438.

The previous prime is 1123429. The next prime is 1123477. The reversal of 1123439 is 9343211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123439 - 2¹² = 1119343 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

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, 561719 + 561720.

It is an arithmetic number, because the mean of its divisors is an integer number (561720).

2^1123439 is an apocalyptic number.

1123439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123439 is an equidigital number, since it uses as much as digits as its factorization.

1123439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 1123439 is about 1059.9240538831. The cubic root of 1123439 is about 103.9560650221.

The spelling of 1123439 in words is "one million, one hundred twenty-three thousand, four hundred thirty-nine".