1241666143 has 2 divisors, whose sum is σ = 1241666144. Its totient is φ = 1241666142.

The previous prime is 1241666123. The next prime is 1241666149. The reversal of 1241666143 is 3416661421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1241666143 - 2⁹ = 1241665631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1241666099 and 1241666108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241666149) 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, 620833071 + 620833072.

It is an arithmetic number, because the mean of its divisors is an integer number (620833072).

Almost surely, 2^1241666143 is an apocalyptic number.

1241666143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241666143 is an equidigital number, since it uses as much as digits as its factorization.

1241666143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 1241666143 is about 35237.2834225341. The cubic root of 1241666143 is about 1074.8180382119.

The spelling of 1241666143 in words is "one billion, two hundred forty-one million, six hundred sixty-six thousand, one hundred forty-three".