12161642 has 8 divisors (see below), whose sum is σ = 18307776. Its totient is φ = 6059052.

The previous prime is 12161629. The next prime is 12161651. The reversal of 12161642 is 24616121.

12161642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12161642² = 295811072272328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10178 + ... + 11309.

It is an arithmetic number, because the mean of its divisors is an integer number (2288472).

Almost surely, 2^12161642 is an apocalyptic number.

12161642 is a deficient number, since it is larger than the sum of its proper divisors (6146134).

12161642 is a wasteful number, since it uses less digits than its factorization.

12161642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21772.

The product of its digits is 576, while the sum is 23.

The square root of 12161642 is about 3487.3545847820. The cubic root of 12161642 is about 229.9662332281.

Adding to 12161642 its reverse (24616121), we get a palindrome (36777763).

The spelling of 12161642 in words is "twelve million, one hundred sixty-one thousand, six hundred forty-two".