42640716 has 48 divisors (see below), whose sum is σ = 102009600. Its totient is φ = 13858752.

The previous prime is 42640711. The next prime is 42640723. The reversal of 42640716 is 61704624.

It is not an unprimeable number, because it can be changed into a prime (42640711) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 162001 + ... + 162263.

It is an arithmetic number, because the mean of its divisors is an integer number (2125200).

Almost surely, 2^42640716 is an apocalyptic number.

It is an amenable number.

42640716 is an abundant number, since it is smaller than the sum of its proper divisors (59368884).

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

42640716 is a wasteful number, since it uses less digits than its factorization.

42640716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 42640716 is about 6529.9859111640. The cubic root of 42640716 is about 349.3613277911.

The spelling of 42640716 in words is "forty-two million, six hundred forty thousand, seven hundred sixteen".