1218275 has 6 divisors (see below), whose sum is σ = 1510692. Its totient is φ = 974600.

The previous prime is 1218263. The next prime is 1218277. The reversal of 1218275 is 5728121.

It is not a de Polignac number, because 1218275 - 2⁶ = 1218211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1218277) 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 5 ways as a sum of consecutive naturals, for example, 24341 + ... + 24390.

It is an arithmetic number, because the mean of its divisors is an integer number (251782).

2^1218275 is an apocalyptic number.

1218275 is a deficient number, since it is larger than the sum of its proper divisors (292417).

1218275 is an equidigital number, since it uses as much as digits as its factorization.

1218275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48741 (or 48736 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 1218275 is about 1103.7549546888. The cubic root of 1218275 is about 106.8025882281.

The spelling of 1218275 in words is "one million, two hundred eighteen thousand, two hundred seventy-five".