1423424 has 28 divisors (see below), whose sum is σ = 2950464. Its totient is φ = 680064.

The previous prime is 1423417. The next prime is 1423439. The reversal of 1423424 is 4243241.

It is a super-2 number, since 2×1423424² = 4052271767552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1423396 and 1423405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989 + ... + 1955.

2^1423424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1475232).

1423424 is an abundant number, since it is smaller than the sum of its proper divisors (1527040).

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

1423424 is an equidigital number, since it uses as much as digits as its factorization.

1423424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002 (or 992 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 1423424 is about 1193.0733422552. The cubic root of 1423424 is about 112.4893553714.

Adding to 1423424 its reverse (4243241), we get a palindrome (5666665).

The spelling of 1423424 in words is "one million, four hundred twenty-three thousand, four hundred twenty-four".