1222427 has 4 divisors (see below), whose sum is σ = 1275600. Its totient is φ = 1169256.

The previous prime is 1222411. The next prime is 1222433. The reversal of 1222427 is 7242221.

It is a happy number.

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 1222427 - 2⁴ = 1222411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222399 and 1222408.

It is not an unprimeable number, because it can be changed into a prime (1222027) 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 3 ways as a sum of consecutive naturals, for example, 26552 + ... + 26597.

It is an arithmetic number, because the mean of its divisors is an integer number (318900).

2^1222427 is an apocalyptic number.

1222427 is a deficient number, since it is larger than the sum of its proper divisors (53173).

1222427 is an equidigital number, since it uses as much as digits as its factorization.

1222427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53172.

The product of its digits is 448, while the sum is 20.

The square root of 1222427 is about 1105.6342071409. The cubic root of 1222427 is about 106.9237818642.

Adding to 1222427 its reverse (7242221), we get a palindrome (8464648).

The spelling of 1222427 in words is "one million, two hundred twenty-two thousand, four hundred twenty-seven".