12161842 has 32 divisors (see below), whose sum is σ = 22938624. Its totient is φ = 4698000.

The previous prime is 12161839. The next prime is 12161867. The reversal of 12161842 is 24816121.

12161842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22993 + ... + 23515.

It is an arithmetic number, because the mean of its divisors is an integer number (716832).

Almost surely, 2^12161842 is an apocalyptic number.

12161842 is a deficient number, since it is larger than the sum of its proper divisors (10776782).

12161842 is a wasteful number, since it uses less digits than its factorization.

12161842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694.

The product of its digits is 768, while the sum is 25.

The square root of 12161842 is about 3487.3832596949. The cubic root of 12161842 is about 229.9674938308.

Adding to 12161842 its reverse (24816121), we get a palindrome (36977963).

The spelling of 12161842 in words is "twelve million, one hundred sixty-one thousand, eight hundred forty-two".