1423455 has 16 divisors (see below), whose sum is σ = 2484864. Its totient is φ = 690080.

The previous prime is 1423453. The next prime is 1423463. The reversal of 1423455 is 5543241.

It is not a de Polignac number, because 1423455 - 2¹ = 1423453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423451) 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, 4149 + ... + 4478.

It is an arithmetic number, because the mean of its divisors is an integer number (155304).

2^1423455 is an apocalyptic number.

1423455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1423455 is a deficient number, since it is larger than the sum of its proper divisors (1061409).

1423455 is a wasteful number, since it uses less digits than its factorization.

1423455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8646.

The product of its digits is 2400, while the sum is 24.

The square root of 1423455 is about 1193.0863338418. The cubic root of 1423455 is about 112.4901719810.

Adding to 1423455 its reverse (5543241), we get a palindrome (6966696).

The spelling of 1423455 in words is "one million, four hundred twenty-three thousand, four hundred fifty-five".