1188422 has 4 divisors (see below), whose sum is σ = 1782636. Its totient is φ = 594210.

The previous prime is 1188413. The next prime is 1188457. The reversal of 1188422 is 2248811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2248811 = 17 ⋅132283.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1188391 and 1188400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 297104 + ... + 297107.

It is an arithmetic number, because the mean of its divisors is an integer number (445659).

2^1188422 is an apocalyptic number.

1188422 is a deficient number, since it is larger than the sum of its proper divisors (594214).

1188422 is an equidigital number, since it uses as much as digits as its factorization.

1188422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594213.

The product of its digits is 1024, while the sum is 26.

The square root of 1188422 is about 1090.1476964155. The cubic root of 1188422 is about 105.9229890381.

The spelling of 1188422 in words is "one million, one hundred eighty-eight thousand, four hundred twenty-two".