1239023 has 2 divisors, whose sum is σ = 1239024. Its totient is φ = 1239022.

The previous prime is 1239013. The next prime is 1239041. The reversal of 1239023 is 3209321.

It is a weak prime.

It is an emirp because it is prime and its reverse (3209321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1239023 - 2⁸ = 1238767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1238986 and 1239004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1239013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619511 + 619512.

It is an arithmetic number, because the mean of its divisors is an integer number (619512).

2^1239023 is an apocalyptic number.

1239023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1239023 is an equidigital number, since it uses as much as digits as its factorization.

1239023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1239023 is about 1113.1141001712. The cubic root of 1239023 is about 107.4054838971.

The spelling of 1239023 in words is "one million, two hundred thirty-nine thousand, twenty-three".