42640014 has 8 divisors (see below), whose sum is σ = 85280040. Its totient is φ = 14213336.

The previous prime is 42640007. The next prime is 42640033. The reversal of 42640014 is 41004624.

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

42640014 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3553329 + ... + 3553340.

It is an arithmetic number, because the mean of its divisors is an integer number (10660005).

Almost surely, 2^42640014 is an apocalyptic number.

42640014 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42640014 is a wasteful number, since it uses less digits than its factorization.

42640014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106674.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 42640014 is about 6529.9321589125. The cubic root of 42640014 is about 349.3594105859.

Adding to 42640014 its reverse (41004624), we get a palindrome (83644638).

The spelling of 42640014 in words is "forty-two million, six hundred forty thousand, fourteen".