1424209 has 4 divisors (see below), whose sum is σ = 1508004. Its totient is φ = 1340416.

The previous prime is 1424191. The next prime is 1424231. The reversal of 1424209 is 9024241.

1424209 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9024241 = 521 ⋅17321.

It can be written as a sum of positive squares in 2 ways, for example, as 1299600 + 124609 = 1140^2 + 353^2 .

It is not a de Polignac number, because 1424209 - 2⁵ = 1424177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1424209.

It is not an unprimeable number, because it can be changed into a prime (1424809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41872 + ... + 41905.

It is an arithmetic number, because the mean of its divisors is an integer number (377001).

2^1424209 is an apocalyptic number.

It is an amenable number.

1424209 is a deficient number, since it is larger than the sum of its proper divisors (83795).

1424209 is an equidigital number, since it uses as much as digits as its factorization.

1424209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83794.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1424209 is about 1193.4022792001. The cubic root of 1424209 is about 112.5100303814.

The spelling of 1424209 in words is "one million, four hundred twenty-four thousand, two hundred nine".