64021043 has 2 divisors, whose sum is σ = 64021044. Its totient is φ = 64021042.

The previous prime is 64021007. The next prime is 64021057. The reversal of 64021043 is 34012046.

It is a happy number.

64021043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64021043 - 2⁸ = 64020787 is a prime.

It is not a weakly prime, because it can be changed into another prime (64021093) 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, 32010521 + 32010522.

It is an arithmetic number, because the mean of its divisors is an integer number (32010522).

Almost surely, 2^64021043 is an apocalyptic number.

64021043 is a deficient number, since it is larger than the sum of its proper divisors (1).

64021043 is an equidigital number, since it uses as much as digits as its factorization.

64021043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 64021043 is about 8001.3150794104. The cubic root of 64021043 is about 400.0438347794.

Adding to 64021043 its reverse (34012046), we get a palindrome (98033089).

The spelling of 64021043 in words is "sixty-four million, twenty-one thousand, forty-three".