64245442 has 16 divisors (see below), whose sum is σ = 99006264. Its totient is φ = 31248000.

The previous prime is 64245437. The next prime is 64245457. The reversal of 64245442 is 24454246.

It is a happy number.

64245442 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 4 ways, for example, as 1661521 + 62583921 = 1289^2 + 7911^2 .

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 7 ways as a sum of consecutive naturals, for example, 33592 + ... + 35452.

Almost surely, 2^64245442 is an apocalyptic number.

64245442 is a deficient number, since it is larger than the sum of its proper divisors (34760822).

64245442 is a wasteful number, since it uses less digits than its factorization.

64245442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325.

The product of its digits is 30720, while the sum is 31.

The square root of 64245442 is about 8015.3254456697. The cubic root of 64245442 is about 400.5106852240.

Adding to 64245442 its reverse (24454246), we get a palindrome (88699688).

The spelling of 64245442 in words is "sixty-four million, two hundred forty-five thousand, four hundred forty-two".