12181042 has 8 divisors (see below), whose sum is σ = 18330156. Its totient is φ = 6070992.

The previous prime is 12181031. The next prime is 12181051. The reversal of 12181042 is 24018121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12173121 + 7921 = 3489^2 + 89^2 .

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

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, 8973 + ... + 10240.

Almost surely, 2^12181042 is an apocalyptic number.

12181042 is a deficient number, since it is larger than the sum of its proper divisors (6149114).

12181042 is a wasteful number, since it uses less digits than its factorization.

12181042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19532.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 12181042 is about 3490.1349544108. The cubic root of 12181042 is about 230.0884473943.

Adding to 12181042 its reverse (24018121), we get a palindrome (36199163).

The spelling of 12181042 in words is "twelve million, one hundred eighty-one thousand, forty-two".