1261118 has 4 divisors (see below), whose sum is σ = 1891680. Its totient is φ = 630558.

The previous prime is 1261109. The next prime is 1261121. The reversal of 1261118 is 8111621.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1261118.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315278 + ... + 315281.

It is an arithmetic number, because the mean of its divisors is an integer number (472920).

2^1261118 is an apocalyptic number.

1261118 is a deficient number, since it is larger than the sum of its proper divisors (630562).

1261118 is an equidigital number, since it uses as much as digits as its factorization.

1261118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630561.

The product of its digits is 96, while the sum is 20.

The square root of 1261118 is about 1122.9951023936. The cubic root of 1261118 is about 108.0401656731.

Adding to 1261118 its reverse (8111621), we get a palindrome (9372739).

The spelling of 1261118 in words is "one million, two hundred sixty-one thousand, one hundred eighteen".