1423189 has 4 divisors (see below), whose sum is σ = 1506924. Its totient is φ = 1339456.

The previous prime is 1423187. The next prime is 1423193. The reversal of 1423189 is 9813241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1304164 + 119025 = 1142^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423189 - 2¹ = 1423187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423181) 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 in 3 ways as a sum of consecutive naturals, for example, 41842 + ... + 41875.

It is an arithmetic number, because the mean of its divisors is an integer number (376731).

2^1423189 is an apocalyptic number.

It is an amenable number.

1423189 is a deficient number, since it is larger than the sum of its proper divisors (83735).

1423189 is an equidigital number, since it uses as much as digits as its factorization.

1423189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83734.

The product of its digits is 1728, while the sum is 28.

The square root of 1423189 is about 1192.9748530459. The cubic root of 1423189 is about 112.4831645589.

The spelling of 1423189 in words is "one million, four hundred twenty-three thousand, one hundred eighty-nine".