11042138 has 16 divisors (see below), whose sum is σ = 17191680. Its totient is φ = 5313600.

The previous prime is 11042137. The next prime is 11042149. The reversal of 11042138 is 83124011.

It is a super-2 number, since 2×11042138² = 243857623222088, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11042131) 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 7 ways as a sum of consecutive naturals, for example, 14573 + ... + 15311.

It is an arithmetic number, because the mean of its divisors is an integer number (1074480).

Almost surely, 2^11042138 is an apocalyptic number.

11042138 is a deficient number, since it is larger than the sum of its proper divisors (6149542).

11042138 is a wasteful number, since it uses less digits than its factorization.

11042138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 11042138 is about 3322.9712607845. The cubic root of 11042138 is about 222.6816292470.

Adding to 11042138 its reverse (83124011), we get a palindrome (94166149).

The spelling of 11042138 in words is "eleven million, forty-two thousand, one hundred thirty-eight".