1185406 has 16 divisors (see below), whose sum is σ = 1857744. Its totient is φ = 566784.

The previous prime is 1185403. The next prime is 1185439. The reversal of 1185406 is 6045811.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1185403) 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 7 ways as a sum of consecutive naturals, for example, 6046 + ... + 6238.

It is an arithmetic number, because the mean of its divisors is an integer number (116109).

2^1185406 is an apocalyptic number.

1185406 is a deficient number, since it is larger than the sum of its proper divisors (672338).

1185406 is a wasteful number, since it uses less digits than its factorization.

1185406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1185406 is about 1088.7635188598. The cubic root of 1185406 is about 105.8333086711.

The spelling of 1185406 in words is "one million, one hundred eighty-five thousand, four hundred six".