42513516 has 18 divisors (see below), whose sum is σ = 107464812. Its totient is φ = 14171160.

The previous prime is 42513511. The next prime is 42513517. The reversal of 42513516 is 61531524.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 42513516.

It is not an unprimeable number, because it can be changed into a prime (42513511) 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 5 ways as a sum of consecutive naturals, for example, 590430 + ... + 590501.

Almost surely, 2^42513516 is an apocalyptic number.

It is an amenable number.

42513516 is an abundant number, since it is smaller than the sum of its proper divisors (64951296).

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

42513516 is a wasteful number, since it uses less digits than its factorization.

42513516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180941 (or 1180936 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 42513516 is about 6520.2389526765. The cubic root of 42513516 is about 349.0135926814.

The spelling of 42513516 in words is "forty-two million, five hundred thirteen thousand, five hundred sixteen".