12147419 has 4 divisors (see below), whose sum is σ = 12313896. Its totient is φ = 11980944.

The previous prime is 12147397. The next prime is 12147463. The reversal of 12147419 is 91474121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12147419 is a prime.

It is a super-2 number, since 2×12147419² = 295119576723122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12147391 and 12147400.

It is not an unprimeable number, because it can be changed into a prime (12140419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83129 + ... + 83274.

It is an arithmetic number, because the mean of its divisors is an integer number (3078474).

Almost surely, 2^12147419 is an apocalyptic number.

12147419 is a deficient number, since it is larger than the sum of its proper divisors (166477).

12147419 is an equidigital number, since it uses as much as digits as its factorization.

12147419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166476.

The product of its digits is 2016, while the sum is 29.

The square root of 12147419 is about 3485.3147634037. The cubic root of 12147419 is about 229.8765500085.

The spelling of 12147419 in words is "twelve million, one hundred forty-seven thousand, four hundred nineteen".