1423406 has 8 divisors (see below), whose sum is σ = 2145864. Its totient is φ = 708120.

The previous prime is 1423403. The next prime is 1423417. The reversal of 1423406 is 6043241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423403) 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 in 3 ways as a sum of consecutive naturals, for example, 1265 + ... + 2108.

It is an arithmetic number, because the mean of its divisors is an integer number (268233).

2^1423406 is an apocalyptic number.

1423406 is a deficient number, since it is larger than the sum of its proper divisors (722458).

1423406 is a wasteful number, since it uses less digits than its factorization.

1423406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1423406 is about 1193.0657986884. The cubic root of 1423406 is about 112.4888812057.

Adding to 1423406 its reverse (6043241), we get a palindrome (7466647).

The spelling of 1423406 in words is "one million, four hundred twenty-three thousand, four hundred six".