12181234 has 8 divisors (see below), whose sum is σ = 19677420. Its totient is φ = 5622096.

The previous prime is 12181217. The next prime is 12181243. The reversal of 12181234 is 43218121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10870209 + 1311025 = 3297^2 + 1145^2 .

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

It is an alternating number because its digits alternate between odd and even.

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, 234229 + ... + 234280.

Almost surely, 2^12181234 is an apocalyptic number.

12181234 is a deficient number, since it is larger than the sum of its proper divisors (7496186).

12181234 is a wasteful number, since it uses less digits than its factorization.

12181234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468524.

The product of its digits is 384, while the sum is 22.

The square root of 12181234 is about 3490.1624604021. The cubic root of 12181234 is about 230.0896562879.

Adding to 12181234 its reverse (43218121), we get a palindrome (55399355).

The spelling of 12181234 in words is "twelve million, one hundred eighty-one thousand, two hundred thirty-four".