1273423 has 2 divisors, whose sum is σ = 1273424. Its totient is φ = 1273422.

The previous prime is 1273421. The next prime is 1273457. The reversal of 1273423 is 3243721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1273423 - 2¹ = 1273421 is a prime.

It is a super-2 number, since 2×1273423² = 3243212273858, which contains 22 as substring.

Together with 1273421, it forms a pair of twin primes.

1273423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1273394 and 1273403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1273421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636711 + 636712.

It is an arithmetic number, because the mean of its divisors is an integer number (636712).

2^1273423 is an apocalyptic number.

1273423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273423 is an equidigital number, since it uses as much as digits as its factorization.

1273423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 22.

The square root of 1273423 is about 1128.4604556652. The cubic root of 1273423 is about 108.3904193545.

The spelling of 1273423 in words is "one million, two hundred seventy-three thousand, four hundred twenty-three".