12249143 has 2 divisors, whose sum is σ = 12249144. Its totient is φ = 12249142.

The previous prime is 12249121. The next prime is 12249151. The reversal of 12249143 is 34194221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12249143 - 2⁶ = 12249079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12249103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6124571 + 6124572.

It is an arithmetic number, because the mean of its divisors is an integer number (6124572).

Almost surely, 2^12249143 is an apocalyptic number.

12249143 is a deficient number, since it is larger than the sum of its proper divisors (1).

12249143 is an equidigital number, since it uses as much as digits as its factorization.

12249143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 12249143 is about 3499.8775692872. The cubic root of 12249143 is about 230.5164387716.

The spelling of 12249143 in words is "twelve million, two hundred forty-nine thousand, one hundred forty-three".