11161542 has 32 divisors (see below), whose sum is σ = 25627392. Its totient is φ = 3174624.

The previous prime is 11161523. The next prime is 11161543. The reversal of 11161542 is 24516111.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11161543) 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 15 ways as a sum of consecutive naturals, for example, 11853 + ... + 12759.

It is an arithmetic number, because the mean of its divisors is an integer number (800856).

Almost surely, 2^11161542 is an apocalyptic number.

11161542 is an abundant number, since it is smaller than the sum of its proper divisors (14465850).

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

11161542 is a wasteful number, since it uses less digits than its factorization.

11161542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its digits is 240, while the sum is 21.

The square root of 11161542 is about 3340.8894025394. The cubic root of 11161542 is about 223.4814081998.

Adding to 11161542 its reverse (24516111), we get a palindrome (35677653).

The spelling of 11161542 in words is "eleven million, one hundred sixty-one thousand, five hundred forty-two".