1421223 has 4 divisors (see below), whose sum is σ = 1894968. Its totient is φ = 947480.

The previous prime is 1421221. The next prime is 1421227. The reversal of 1421223 is 3221241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1421223 - 2¹ = 1421221 is a prime.

It is a D-number.

1421223 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421221) 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, 236868 + ... + 236873.

It is an arithmetic number, because the mean of its divisors is an integer number (473742).

2^1421223 is an apocalyptic number.

1421223 is a deficient number, since it is larger than the sum of its proper divisors (473745).

1421223 is an equidigital number, since it uses as much as digits as its factorization.

1421223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473744.

The product of its digits is 96, while the sum is 15.

The square root of 1421223 is about 1192.1505777376. The cubic root of 1421223 is about 112.4313457659.

Adding to 1421223 its reverse (3221241), we get a palindrome (4642464).

The spelling of 1421223 in words is "one million, four hundred twenty-one thousand, two hundred twenty-three".