1423245 has 16 divisors (see below), whose sum is σ = 2292480. Its totient is φ = 753984.

The previous prime is 1423243. The next prime is 1423259. The reversal of 1423245 is 5423241.

It is not a de Polignac number, because 1423245 - 2¹ = 1423243 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423243) 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, 3387 + ... + 3783.

It is an arithmetic number, because the mean of its divisors is an integer number (143280).

2^1423245 is an apocalyptic number.

1423245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1423245 is a deficient number, since it is larger than the sum of its proper divisors (869235).

1423245 is a wasteful number, since it uses less digits than its factorization.

1423245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its digits is 960, while the sum is 21.

The square root of 1423245 is about 1192.9983235529. The cubic root of 1423245 is about 112.4846398782.

Adding to 1423245 its reverse (5423241), we get a palindrome (6846486).

The spelling of 1423245 in words is "one million, four hundred twenty-three thousand, two hundred forty-five".