1272118 has 4 divisors (see below), whose sum is σ = 1908180. Its totient is φ = 636058.

The previous prime is 1272113. The next prime is 1272133. The reversal of 1272118 is 8112721.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272113) 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 as a sum of consecutive naturals, namely, 318028 + ... + 318031.

It is an arithmetic number, because the mean of its divisors is an integer number (477045).

2^1272118 is an apocalyptic number.

1272118 is a deficient number, since it is larger than the sum of its proper divisors (636062).

1272118 is an equidigital number, since it uses as much as digits as its factorization.

1272118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636061.

The product of its digits is 224, while the sum is 22.

The square root of 1272118 is about 1127.8820860356. The cubic root of 1272118 is about 108.3533806424.

Adding to 1272118 its reverse (8112721), we get a palindrome (9384839).

The spelling of 1272118 in words is "one million, two hundred seventy-two thousand, one hundred eighteen".