64042642 has 8 divisors (see below), whose sum is σ = 96097932. Its totient is φ = 32010000.

The previous prime is 64042607. The next prime is 64042651. The reversal of 64042642 is 24624046.

64042642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47485881 + 16556761 = 6891^2 + 4069^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 64042642.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8092 + ... + 13912.

Almost surely, 2^64042642 is an apocalyptic number.

64042642 is a deficient number, since it is larger than the sum of its proper divisors (32055290).

64042642 is a wasteful number, since it uses less digits than its factorization.

64042642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11324.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 64042642 is about 8002.6646812171. The cubic root of 64042642 is about 400.0888177770.

Adding to 64042642 its reverse (24624046), we get a palindrome (88666688).

The spelling of 64042642 in words is "sixty-four million, forty-two thousand, six hundred forty-two".