1423605 has 8 divisors (see below), whose sum is σ = 2277792. Its totient is φ = 759248.

The previous prime is 1423603. The next prime is 1423607. The reversal of 1423605 is 5063241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1423603) and next prime (1423607).

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

It is a cyclic number.

It is not a de Polignac number, because 1423605 - 2¹ = 1423603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423603) 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 7 ways as a sum of consecutive naturals, for example, 47439 + ... + 47468.

It is an arithmetic number, because the mean of its divisors is an integer number (284724).

2^1423605 is an apocalyptic number.

1423605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1423605 is a deficient number, since it is larger than the sum of its proper divisors (854187).

1423605 is an equidigital number, since it uses as much as digits as its factorization.

1423605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94915.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1423605 is about 1193.1491943592. The cubic root of 1423605 is about 112.4941231498.

Adding to 1423605 its reverse (5063241), we get a palindrome (6486846).

The spelling of 1423605 in words is "one million, four hundred twenty-three thousand, six hundred five".