64044842 has 4 divisors (see below), whose sum is σ = 96067266. Its totient is φ = 32022420.

The previous prime is 64044833. The next prime is 64044863. The reversal of 64044842 is 24844046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24844046 = 2 ⋅12422023.

It can be written as a sum of positive squares in only one way, i.e., 42133081 + 21911761 = 6491^2 + 4681^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64044799 and 64044808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16011209 + ... + 16011212.

Almost surely, 2^64044842 is an apocalyptic number.

64044842 is a deficient number, since it is larger than the sum of its proper divisors (32022424).

64044842 is a wasteful number, since it uses less digits than its factorization.

64044842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32022423.

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 64044842 is about 8002.8021342527. The cubic root of 64044842 is about 400.0933990232.

Adding to 64044842 its reverse (24844046), we get a palindrome (88888888).

The spelling of 64044842 in words is "sixty-four million, forty-four thousand, eight hundred forty-two".