1220422 has 16 divisors (see below), whose sum is σ = 2108160. Its totient is φ = 519048.

The previous prime is 1220411. The next prime is 1220423. The reversal of 1220422 is 2240221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2263 + ... + 2749.

It is an arithmetic number, because the mean of its divisors is an integer number (131760).

2^1220422 is an apocalyptic number.

1220422 is a deficient number, since it is larger than the sum of its proper divisors (887738).

1220422 is a wasteful number, since it uses less digits than its factorization.

1220422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1220422 is about 1104.7271156263. The cubic root of 1220422 is about 106.8652918008.

Adding to 1220422 its reverse (2240221), we get a palindrome (3460643).

The spelling of 1220422 in words is "one million, two hundred twenty thousand, four hundred twenty-two".