1284422 has 4 divisors (see below), whose sum is σ = 1926636. Its totient is φ = 642210.

The previous prime is 1284421. The next prime is 1284427. The reversal of 1284422 is 2244821.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321104 + ... + 321107.

It is an arithmetic number, because the mean of its divisors is an integer number (481659).

2^1284422 is an apocalyptic number.

1284422 is a deficient number, since it is larger than the sum of its proper divisors (642214).

1284422 is an equidigital number, since it uses as much as digits as its factorization.

1284422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642213.

The product of its digits is 1024, while the sum is 23.

The square root of 1284422 is about 1133.3234313293. The cubic root of 1284422 is about 108.7015938178.

The spelling of 1284422 in words is "one million, two hundred eighty-four thousand, four hundred twenty-two".