1181272 has 16 divisors (see below), whose sum is σ = 2232000. Its totient is φ = 586080.

The previous prime is 1181269. The next prime is 1181281. The reversal of 1181272 is 2721811.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (139500).

2^1181272 is an apocalyptic number.

It is an amenable number.

1181272 is a deficient number, since it is larger than the sum of its proper divisors (1050728).

1181272 is a wasteful number, since it uses less digits than its factorization.

1181272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1142 counting only the distinct ones).

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

The square root of 1181272 is about 1086.8633768786. The cubic root of 1181272 is about 105.7101372333.

The spelling of 1181272 in words is "one million, one hundred eighty-one thousand, two hundred seventy-two".