42145660 has 24 divisors (see below), whose sum is σ = 92354976. Its totient is φ = 16125120.

The previous prime is 42145651. The next prime is 42145679. The reversal of 42145660 is 6654124.

42145660 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 an unprimeable number.

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, 45351 + ... + 46270.

It is an arithmetic number, because the mean of its divisors is an integer number (3848124).

Almost surely, 2^42145660 is an apocalyptic number.

It is an amenable number.

42145660 is an abundant number, since it is smaller than the sum of its proper divisors (50209316).

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

42145660 is a wasteful number, since it uses less digits than its factorization.

42145660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91653 (or 91651 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 42145660 is about 6491.9688847067. The cubic root of 42145660 is about 348.0040405573.

Adding to 42145660 its reverse (6654124), we get a palindrome (48799784).

The spelling of 42145660 in words is "forty-two million, one hundred forty-five thousand, six hundred sixty".