1421206 has 4 divisors (see below), whose sum is σ = 2131812. Its totient is φ = 710602.

The previous prime is 1421191. The next prime is 1421213. The reversal of 1421206 is 6021241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6021241 = 29 ⋅207629.

It is a self number, because there is not a number n which added to its sum of digits gives 1421206.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 355300 + ... + 355303.

It is an arithmetic number, because the mean of its divisors is an integer number (532953).

2^1421206 is an apocalyptic number.

1421206 is a deficient number, since it is larger than the sum of its proper divisors (710606).

1421206 is an equidigital number, since it uses as much as digits as its factorization.

1421206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710605.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1421206 is about 1192.1434477444. The cubic root of 1421206 is about 112.4308974805.

Adding to 1421206 its reverse (6021241), we get a palindrome (7442447).

The spelling of 1421206 in words is "one million, four hundred twenty-one thousand, two hundred six".