12161234 has 8 divisors (see below), whose sum is σ = 18734988. Its totient is φ = 5916240.

The previous prime is 12161213. The next prime is 12161251. The reversal of 12161234 is 43216121.

It can be written as a sum of positive squares in 2 ways, for example, as 11526025 + 635209 = 3395^2 + 797^2 .

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

It is a super-2 number, since 2×12161234² = 295791224805512, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82097 + ... + 82244.

Almost surely, 2^12161234 is an apocalyptic number.

12161234 is a deficient number, since it is larger than the sum of its proper divisors (6573754).

12161234 is a wasteful number, since it uses less digits than its factorization.

12161234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164380.

The product of its digits is 288, while the sum is 20.

The square root of 12161234 is about 3487.2960872286. The cubic root of 12161234 is about 229.9636615559.

Adding to 12161234 its reverse (43216121), we get a palindrome (55377355).

The spelling of 12161234 in words is "twelve million, one hundred sixty-one thousand, two hundred thirty-four".