43642064 has 40 divisors (see below), whose sum is σ = 87181920. Its totient is φ = 21154688.

The previous prime is 43642061. The next prime is 43642073. The reversal of 43642064 is 46024634.

It is a happy number.

43642064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43642061) 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, 78074 + ... + 78630.

It is an arithmetic number, because the mean of its divisors is an integer number (2179548).

Almost surely, 2^43642064 is an apocalyptic number.

It is an amenable number.

43642064 is a deficient number, since it is larger than the sum of its proper divisors (43539856).

43642064 is a wasteful number, since it uses less digits than its factorization.

43642064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 43642064 is about 6606.2140443676. The cubic root of 43642064 is about 352.0749237895.

Adding to 43642064 its reverse (46024634), we get a palindrome (89666698).

The spelling of 43642064 in words is "forty-three million, six hundred forty-two thousand, sixty-four".