12145417 has 2 divisors, whose sum is σ = 12145418. Its totient is φ = 12145416.

The previous prime is 12145387. The next prime is 12145433. The reversal of 12145417 is 71454121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10010896 + 2134521 = 3164^2 + 1461^2 .

It is a cyclic number.

It is not a de Polignac number, because 12145417 - 2¹⁵ = 12112649 is a prime.

It is a super-2 number, since 2×12145417² = 295022308207778, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12145391 and 12145400.

It is not a weakly prime, because it can be changed into another prime (12145447) by changing a digit.

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, 6072708 + 6072709.

It is an arithmetic number, because the mean of its divisors is an integer number (6072709).

Almost surely, 2^12145417 is an apocalyptic number.

It is an amenable number.

12145417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145417 is an equidigital number, since it uses as much as digits as its factorization.

12145417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 25.

The square root of 12145417 is about 3485.0275465195. The cubic root of 12145417 is about 229.8639207650.

Adding to 12145417 its reverse (71454121), we get a palindrome (83599538).

The spelling of 12145417 in words is "twelve million, one hundred forty-five thousand, four hundred seventeen".