42500016 has 120 divisors (see below), whose sum is σ = 130262496. Its totient is φ = 12856320.

The previous prime is 42499999. The next prime is 42500023. The reversal of 42500016 is 61000524.

It is a happy number.

42500016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 136501 + ... + 136811.

Almost surely, 2^42500016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42500016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65131248).

42500016 is an abundant number, since it is smaller than the sum of its proper divisors (87762480).

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

42500016 is a wasteful number, since it uses less digits than its factorization.

42500016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 42500016 is about 6519.2036323465. The cubic root of 42500016 is about 348.9766461386.

The spelling of 42500016 in words is "forty-two million, five hundred thousand, sixteen".