12145426 has 8 divisors (see below), whose sum is σ = 19010304. Its totient is φ = 5808660.

The previous prime is 12145417. The next prime is 12145433. The reversal of 12145426 is 62454121.

It is a happy number.

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

It is a super-2 number, since 2×12145426² = 295022745442952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12145426.

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, 131970 + ... + 132061.

It is an arithmetic number, because the mean of its divisors is an integer number (2376288).

Almost surely, 2^12145426 is an apocalyptic number.

12145426 is a deficient number, since it is larger than the sum of its proper divisors (6864878).

12145426 is a wasteful number, since it uses less digits than its factorization.

12145426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264056.

The product of its digits is 1920, while the sum is 25.

The square root of 12145426 is about 3485.0288377573. The cubic root of 12145426 is about 229.8639775429.

Adding to 12145426 its reverse (62454121), we get a palindrome (74599547).

The spelling of 12145426 in words is "twelve million, one hundred forty-five thousand, four hundred twenty-six".