1128422 has 8 divisors (see below), whose sum is σ = 1708776. Its totient is φ = 558832.

The previous prime is 1128397. The next prime is 1128427. The reversal of 1128422 is 2248211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1128394 and 1128403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128427) 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, 2423 + ... + 2850.

It is an arithmetic number, because the mean of its divisors is an integer number (213597).

2^1128422 is an apocalyptic number.

1128422 is a deficient number, since it is larger than the sum of its proper divisors (580354).

1128422 is a wasteful number, since it uses less digits than its factorization.

1128422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5382.

The product of its digits is 256, while the sum is 20.

The square root of 1128422 is about 1062.2720932040. The cubic root of 1128422 is about 104.1095369577.

The spelling of 1128422 in words is "one million, one hundred twenty-eight thousand, four hundred twenty-two".