7242143 has 2 divisors, whose sum is σ = 7242144. Its totient is φ = 7242142.

The previous prime is 7242139. The next prime is 7242149. The reversal of 7242143 is 3412427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7242143 - 2² = 7242139 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7242149) 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, 3621071 + 3621072.

It is an arithmetic number, because the mean of its divisors is an integer number (3621072).

Almost surely, 2^7242143 is an apocalyptic number.

7242143 is a deficient number, since it is larger than the sum of its proper divisors (1).

7242143 is an equidigital number, since it uses as much as digits as its factorization.

7242143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 23.

The square root of 7242143 is about 2691.1229997902. The cubic root of 7242143 is about 193.4738907188.

The spelling of 7242143 in words is "seven million, two hundred forty-two thousand, one hundred forty-three".