1181206 has 16 divisors (see below), whose sum is σ = 1926288. Its totient is φ = 540000.

The previous prime is 1181203. The next prime is 1181209. The reversal of 1181206 is 6021811.

It is an interprime number because it is at equal distance from previous prime (1181203) and next prime (1181209).

It is a super-2 number, since 2×1181206² = 2790495228872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181203) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4581 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (120393).

2^1181206 is an apocalyptic number.

1181206 is a deficient number, since it is larger than the sum of its proper divisors (745082).

1181206 is a wasteful number, since it uses less digits than its factorization.

1181206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1181206 is about 1086.8330138526. The cubic root of 1181206 is about 105.7081684519.

The spelling of 1181206 in words is "one million, one hundred eighty-one thousand, two hundred six".