1423005 has 16 divisors (see below), whose sum is σ = 2397120. Its totient is φ = 718848.

The previous prime is 1423003. The next prime is 1423039. The reversal of 1423005 is 5003241.

It is not a de Polignac number, because 1423005 - 2¹ = 1423003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423003) 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 15 ways as a sum of consecutive naturals, for example, 2212 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (149820).

2^1423005 is an apocalyptic number.

1423005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1423005 is a deficient number, since it is larger than the sum of its proper divisors (974115).

1423005 is a wasteful number, since it uses less digits than its factorization.

1423005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1423005 is about 1192.8977324146. The cubic root of 1423005 is about 112.4783168087.

Adding to 1423005 its reverse (5003241), we get a palindrome (6426246).

The spelling of 1423005 in words is "one million, four hundred twenty-three thousand, five".