42940224 has 84 divisors (see below), whose sum is σ = 124260864. Its totient is φ = 14176512.

The previous prime is 42940169. The next prime is 42940237. The reversal of 42940224 is 42204924.

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, 72859 + ... + 73445.

It is an arithmetic number, because the mean of its divisors is an integer number (1479296).

Almost surely, 2^42940224 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 42940224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62130432).

42940224 is an abundant number, since it is smaller than the sum of its proper divisors (81320640).

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

42940224 is a wasteful number, since it uses less digits than its factorization.

42940224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 42940224 is about 6552.8790619086. The cubic root of 42940224 is about 350.1773903502.

The spelling of 42940224 in words is "forty-two million, nine hundred forty thousand, two hundred twenty-four".