42939216 has 60 divisors (see below), whose sum is σ = 124059520. Its totient is φ = 13849920.

The previous prime is 42939199. The next prime is 42939223. The reversal of 42939216 is 61293924.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346 + ... + 9273.

Almost surely, 2^42939216 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 42939216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62029760).

42939216 is an abundant number, since it is smaller than the sum of its proper divisors (81120304).

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

42939216 is a wasteful number, since it uses less digits than its factorization.

42939216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9664 (or 9655 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 42939216 is about 6552.8021486994. The cubic root of 42939216 is about 350.1746502499.

The spelling of 42939216 in words is "forty-two million, nine hundred thirty-nine thousand, two hundred sixteen".