1426209 has 4 divisors (see below), whose sum is σ = 1901616. Its totient is φ = 950804.

The previous prime is 1426199. The next prime is 1426211. The reversal of 1426209 is 9026241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1426209 - 2⁷ = 1426081 is a prime.

It is a super-2 number, since 2×1426209² = 4068144223362, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1426289) 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, 237699 + ... + 237704.

It is an arithmetic number, because the mean of its divisors is an integer number (475404).

2^1426209 is an apocalyptic number.

It is an amenable number.

1426209 is a deficient number, since it is larger than the sum of its proper divisors (475407).

1426209 is an equidigital number, since it uses as much as digits as its factorization.

1426209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475406.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1426209 is about 1194.2399256431. The cubic root of 1426209 is about 112.5626712536.

The spelling of 1426209 in words is "one million, four hundred twenty-six thousand, two hundred nine".