42578616 has 32 divisors (see below), whose sum is σ = 108714240. Its totient is φ = 13890528.

The previous prime is 42578611. The next prime is 42578633. The reversal of 42578616 is 61687524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42578611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17746 + ... + 20001.

It is an arithmetic number, because the mean of its divisors is an integer number (3397320).

Almost surely, 2^42578616 is an apocalyptic number.

It is an amenable number.

42578616 is an abundant number, since it is smaller than the sum of its proper divisors (66135624).

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

42578616 is a wasteful number, since it uses less digits than its factorization.

42578616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37803 (or 37799 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 42578616 is about 6525.2291913771. The cubic root of 42578616 is about 349.1916474084.

The spelling of 42578616 in words is "forty-two million, five hundred seventy-eight thousand, six hundred sixteen".