12161142 has 24 divisors (see below), whose sum is σ = 30113616. Its totient is φ = 3474576.

The previous prime is 12161141. The next prime is 12161153. The reversal of 12161142 is 24116121.

12161142 is a `hidden beast` number, since 12 + 1 + 611 + 42 = 666.

12161142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (12161141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48133 + ... + 48384.

It is an arithmetic number, because the mean of its divisors is an integer number (1254734).

Almost surely, 2^12161142 is an apocalyptic number.

12161142 is an abundant number, since it is smaller than the sum of its proper divisors (17952474).

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

12161142 is a wasteful number, since it uses less digits than its factorization.

12161142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96532 (or 96529 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 12161142 is about 3487.2828964683. The cubic root of 12161142 is about 229.9630816610.

Adding to 12161142 its reverse (24116121), we get a palindrome (36277263).

The spelling of 12161142 in words is "twelve million, one hundred sixty-one thousand, one hundred forty-two".