12145234 has 4 divisors (see below), whose sum is σ = 18217854. Its totient is φ = 6072616.

The previous prime is 12145201. The next prime is 12145241. The reversal of 12145234 is 43254121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 9 = 3485^2 + 3^2 .

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 as a sum of consecutive naturals, namely, 3036307 + ... + 3036310.

Almost surely, 2^12145234 is an apocalyptic number.

12145234 is a deficient number, since it is larger than the sum of its proper divisors (6072620).

12145234 is an equidigital number, since it uses as much as digits as its factorization.

12145234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072619.

The product of its digits is 960, while the sum is 22.

The square root of 12145234 is about 3485.0012912480. The cubic root of 12145234 is about 229.8627662744.

Adding to 12145234 its reverse (43254121), we get a palindrome (55399355).

The spelling of 12145234 in words is "twelve million, one hundred forty-five thousand, two hundred thirty-four".