1423506 has 16 divisors (see below), whose sum is σ = 3253824. Its totient is φ = 406704.

The previous prime is 1423483. The next prime is 1423507. The reversal of 1423506 is 6053241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1423507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16905 + ... + 16988.

It is an arithmetic number, because the mean of its divisors is an integer number (203364).

2^1423506 is an apocalyptic number.

1423506 is an abundant number, since it is smaller than the sum of its proper divisors (1830318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423506 is a wasteful number, since it uses less digits than its factorization.

1423506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33905.

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

The square root of 1423506 is about 1193.1077067893. The cubic root of 1423506 is about 112.4915154095.

Adding to 1423506 its reverse (6053241), we get a palindrome (7476747).

The spelling of 1423506 in words is "one million, four hundred twenty-three thousand, five hundred six".