1090423 has 2 divisors, whose sum is σ = 1090424. Its totient is φ = 1090422.

The previous prime is 1090421. The next prime is 1090457. The reversal of 1090423 is 3240901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1090423 - 2¹ = 1090421 is a prime.

Together with 1090421, it forms a pair of twin primes.

It is equal to p₈₅₀₀₆ and since 1090423 and 85006 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1090423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1090421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545211 + 545212.

It is an arithmetic number, because the mean of its divisors is an integer number (545212).

2^1090423 is an apocalyptic number.

1090423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090423 is an equidigital number, since it uses as much as digits as its factorization.

1090423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1090423 is about 1044.2332115002. The cubic root of 1090423 is about 102.9275576958.

The spelling of 1090423 in words is "one million, ninety thousand, four hundred twenty-three".