1166542 has 8 divisors (see below), whose sum is σ = 1884456. Its totient is φ = 538392.

The previous prime is 1166533. The next prime is 1166549. The reversal of 1166542 is 2456611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166549) 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 3 ways as a sum of consecutive naturals, for example, 22408 + ... + 22459.

It is an arithmetic number, because the mean of its divisors is an integer number (235557).

2^1166542 is an apocalyptic number.

1166542 is a deficient number, since it is larger than the sum of its proper divisors (717914).

1166542 is a wasteful number, since it uses less digits than its factorization.

1166542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44882.

The product of its digits is 1440, while the sum is 25.

The square root of 1166542 is about 1080.0657387400. The cubic root of 1166542 is about 105.2689101155.

The spelling of 1166542 in words is "one million, one hundred sixty-six thousand, five hundred forty-two".