42640060 has 12 divisors (see below), whose sum is σ = 89544168. Its totient is φ = 17056016.

The previous prime is 42640051. The next prime is 42640061. The reversal of 42640060 is 6004624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42640061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065982 + ... + 1066021.

It is an arithmetic number, because the mean of its divisors is an integer number (7462014).

Almost surely, 2^42640060 is an apocalyptic number.

It is an amenable number.

42640060 is an abundant number, since it is smaller than the sum of its proper divisors (46904108).

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

42640060 is a wasteful number, since it uses less digits than its factorization.

42640060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132012 (or 2132010 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 42640060 is about 6529.9356811534. The cubic root of 42640060 is about 349.3595362154.

Adding to 42640060 its reverse (6004624), we get a palindrome (48644684).

The spelling of 42640060 in words is "forty-two million, six hundred forty thousand, sixty".