11113542 has 72 divisors (see below), whose sum is σ = 27655992. Its totient is φ = 3196800.

The previous prime is 11113513. The next prime is 11113547. The reversal of 11113542 is 24531111.

11113542 is a `hidden beast` number, since 11 + 113 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113547) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 271042 + ... + 271082.

It is an arithmetic number, because the mean of its divisors is an integer number (384111).

Almost surely, 2^11113542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11113542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13827996).

11113542 is an abundant number, since it is smaller than the sum of its proper divisors (16542450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11113542 is a wasteful number, since it uses less digits than its factorization.

11113542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 94 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 11113542 is about 3333.6979467252. The cubic root of 11113542 is about 223.1605886787.

Adding to 11113542 its reverse (24531111), we get a palindrome (35644653).

Subtracting 11113542 from its reverse (24531111), we obtain a square (13417569 = 3663²).

The spelling of 11113542 in words is "eleven million, one hundred thirteen thousand, five hundred forty-two".