1188271 has 4 divisors (see below), whose sum is σ = 1358032. Its totient is φ = 1018512.

The previous prime is 1188269. The next prime is 1188277. The reversal of 1188271 is 1728811.

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

It is a cyclic number.

It is not a de Polignac number, because 1188271 - 2¹ = 1188269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84870 + ... + 84883.

It is an arithmetic number, because the mean of its divisors is an integer number (339508).

2^1188271 is an apocalyptic number.

1188271 is a deficient number, since it is larger than the sum of its proper divisors (169761).

1188271 is an equidigital number, since it uses as much as digits as its factorization.

1188271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169760.

The product of its digits is 896, while the sum is 28.

The square root of 1188271 is about 1090.0784375447. The cubic root of 1188271 is about 105.9185026832.

It can be divided in two parts, 118827 and 1, that added together give a triangular number (118828 = T₄₈₇).

The spelling of 1188271 in words is "one million, one hundred eighty-eight thousand, two hundred seventy-one".