64042321 has 8 divisors (see below), whose sum is σ = 73239680. Its totient is φ = 54857088.

The previous prime is 64042289. The next prime is 64042337. The reversal of 64042321 is 12324046.

It is a happy number.

64042321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64042321 - 2⁵ = 64042289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64042292 and 64042301.

It is not an unprimeable number, because it can be changed into a prime (64042361) 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 in 7 ways as a sum of consecutive naturals, for example, 18625 + ... + 21793.

It is an arithmetic number, because the mean of its divisors is an integer number (9154960).

Almost surely, 2^64042321 is an apocalyptic number.

It is an amenable number.

64042321 is a deficient number, since it is larger than the sum of its proper divisors (9197359).

64042321 is a wasteful number, since it uses less digits than its factorization.

64042321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6063.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 64042321 is about 8002.6446253723. The cubic root of 64042321 is about 400.0881493228.

Adding to 64042321 its reverse (12324046), we get a palindrome (76366367).

The spelling of 64042321 in words is "sixty-four million, forty-two thousand, three hundred twenty-one".