12145493 has 2 divisors, whose sum is σ = 12145494. Its totient is φ = 12145492.

The previous prime is 12145477. The next prime is 12145501. The reversal of 12145493 is 39454121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8898289 + 3247204 = 2983^2 + 1802^2 .

It is a cyclic number.

It is not a de Polignac number, because 12145493 - 2⁴ = 12145477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12145433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072746 + 6072747.

It is an arithmetic number, because the mean of its divisors is an integer number (6072747).

Almost surely, 2^12145493 is an apocalyptic number.

It is an amenable number.

12145493 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145493 is an equidigital number, since it uses as much as digits as its factorization.

12145493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 12145493 is about 3485.0384502900. The cubic root of 12145493 is about 229.8644002222.

The spelling of 12145493 in words is "twelve million, one hundred forty-five thousand, four hundred ninety-three".