143220947 has 2 divisors, whose sum is σ = 143220948. Its totient is φ = 143220946.

The previous prime is 143220941. The next prime is 143220949. The reversal of 143220947 is 749022341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143220947 - 2⁸ = 143220691 is a prime.

Together with 143220949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (143220941) 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, 71610473 + 71610474.

It is an arithmetic number, because the mean of its divisors is an integer number (71610474).

Almost surely, 2^143220947 is an apocalyptic number.

143220947 is a deficient number, since it is larger than the sum of its proper divisors (1).

143220947 is an equidigital number, since it uses as much as digits as its factorization.

143220947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 143220947 is about 11967.4954355538. The cubic root of 143220947 is about 523.2013392712.

The spelling of 143220947 in words is "one hundred forty-three million, two hundred twenty thousand, nine hundred forty-seven".