11142838 has 8 divisors (see below), whose sum is σ = 19102032. Its totient is φ = 4775496.

The previous prime is 11142827. The next prime is 11142839. The reversal of 11142838 is 83824111.

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 (11142839) 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, 397945 + ... + 397972.

It is an arithmetic number, because the mean of its divisors is an integer number (2387754).

Almost surely, 2^11142838 is an apocalyptic number.

11142838 is a deficient number, since it is larger than the sum of its proper divisors (7959194).

11142838 is an equidigital number, since it uses as much as digits as its factorization.

11142838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795926.

The product of its digits is 1536, while the sum is 28.

The square root of 11142838 is about 3338.0889742486. The cubic root of 11142838 is about 223.3565051079.

Adding to 11142838 its reverse (83824111), we get a palindrome (94966949).

The spelling of 11142838 in words is "eleven million, one hundred forty-two thousand, eight hundred thirty-eight".