1123866 has 24 divisors (see below), whose sum is σ = 2520180. Its totient is φ = 361536.

The previous prime is 1123841. The next prime is 1123867. The reversal of 1123866 is 6683211.

It can be written as a sum of positive squares in 2 ways, for example, as 1058841 + 65025 = 1029^2 + 255^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1123867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555 + ... + 1598.

2^1123866 is an apocalyptic number.

1123866 is an abundant number, since it is smaller than the sum of its proper divisors (1396314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123866 is a wasteful number, since it uses less digits than its factorization.

1123866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2187 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1123866 is about 1060.1254642730. The cubic root of 1123866 is about 103.9692339961.

The spelling of 1123866 in words is "one million, one hundred twenty-three thousand, eight hundred sixty-six".