11109142 has 16 divisors (see below), whose sum is σ = 18306000. Its totient is φ = 5014240.

The previous prime is 11109127. The next prime is 11109149. The reversal of 11109142 is 24190111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1584 + ... + 4972.

It is an arithmetic number, because the mean of its divisors is an integer number (1144125).

Almost surely, 2^11109142 is an apocalyptic number.

11109142 is a deficient number, since it is larger than the sum of its proper divisors (7196858).

11109142 is a wasteful number, since it uses less digits than its factorization.

11109142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 11109142 is about 3333.0379535793. The cubic root of 11109142 is about 223.1311340367.

Adding to 11109142 its reverse (24190111), we get a palindrome (35299253).

It can be divided in two parts, 1110914 and 2, that added together give a square (1110916 = 1054²).

The spelling of 11109142 in words is "eleven million, one hundred nine thousand, one hundred forty-two".