1281122 has 8 divisors (see below), whose sum is σ = 1953372. Its totient is φ = 630000.

The previous prime is 1281101. The next prime is 1281131. The reversal of 1281122 is 2211821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1079521 + 201601 = 1039^2 + 449^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1281122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5129 + ... + 5372.

2^1281122 is an apocalyptic number.

1281122 is a deficient number, since it is larger than the sum of its proper divisors (672250).

1281122 is a wasteful number, since it uses less digits than its factorization.

1281122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10564.

The product of its digits is 64, while the sum is 17.

The square root of 1281122 is about 1131.8665999136. The cubic root of 1281122 is about 108.6084201546.

Adding to 1281122 its reverse (2211821), we get a palindrome (3492943).

The spelling of 1281122 in words is "one million, two hundred eighty-one thousand, one hundred twenty-two".