1681122 has 8 divisors (see below), whose sum is σ = 3362256. Its totient is φ = 560372.

The previous prime is 1681103. The next prime is 1681129. The reversal of 1681122 is 2211861.

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

1681122 is an admirable number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1681129) 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, 140088 + ... + 140099.

It is an arithmetic number, because the mean of its divisors is an integer number (420282).

2^1681122 is an apocalyptic number.

1681122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1681122 is a wasteful number, since it uses less digits than its factorization.

1681122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280192.

The product of its digits is 192, while the sum is 21.

The square root of 1681122 is about 1296.5808883367. The cubic root of 1681122 is about 118.9048977708.

Adding to 1681122 its reverse (2211861), we get a palindrome (3892983).

The spelling of 1681122 in words is "one million, six hundred eighty-one thousand, one hundred twenty-two".