42405516 has 36 divisors (see below), whose sum is σ = 107404752. Its totient is φ = 14107104.

The previous prime is 42405509. The next prime is 42405523. The reversal of 42405516 is 61550424.

It is an interprime number because it is at equal distance from previous prime (42405509) and next prime (42405523).

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 42405516.

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 11 ways as a sum of consecutive naturals, for example, 25585 + ... + 27191.

Almost surely, 2^42405516 is an apocalyptic number.

It is an amenable number.

42405516 is an abundant number, since it is smaller than the sum of its proper divisors (64999236).

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

42405516 is a wasteful number, since it uses less digits than its factorization.

42405516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350 (or 2345 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 42405516 is about 6511.9517811483. The cubic root of 42405516 is about 348.7178010123.

The spelling of 42405516 in words is "forty-two million, four hundred five thousand, five hundred sixteen".