64212143 has 2 divisors, whose sum is σ = 64212144. Its totient is φ = 64212142.

The previous prime is 64212121. The next prime is 64212149. The reversal of 64212143 is 34121246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64212143 - 2⁶ = 64212079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64212149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32106071 + 32106072.

It is an arithmetic number, because the mean of its divisors is an integer number (32106072).

Almost surely, 2^64212143 is an apocalyptic number.

64212143 is a deficient number, since it is larger than the sum of its proper divisors (1).

64212143 is an equidigital number, since it uses as much as digits as its factorization.

64212143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 64212143 is about 8013.2479682086. The cubic root of 64212143 is about 400.4414771489.

Adding to 64212143 its reverse (34121246), we get a palindrome (98333389).

The spelling of 64212143 in words is "sixty-four million, two hundred twelve thousand, one hundred forty-three".