11156542 has 8 divisors (see below), whose sum is σ = 16760016. Its totient is φ = 5569872.

The previous prime is 11156527. The next prime is 11156549. The reversal of 11156542 is 24565111.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2383 + ... + 5290.

It is an arithmetic number, because the mean of its divisors is an integer number (2095002).

Almost surely, 2^11156542 is an apocalyptic number.

11156542 is a deficient number, since it is larger than the sum of its proper divisors (5603474).

11156542 is an equidigital number, since it uses as much as digits as its factorization.

11156542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8402.

The product of its digits is 1200, while the sum is 25.

The square root of 11156542 is about 3340.1410149872. The cubic root of 11156542 is about 223.4480324668.

The spelling of 11156542 in words is "eleven million, one hundred fifty-six thousand, five hundred forty-two".