42940584 has 64 divisors (see below), whose sum is σ = 121272000. Its totient is φ = 14074560.

The previous prime is 42940567. The next prime is 42940591. The reversal of 42940584 is 48504924.

It is a super-2 number, since 2×42940584² = 3687787508522112, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11547 + ... + 14805.

It is an arithmetic number, because the mean of its divisors is an integer number (1894875).

Almost surely, 2^42940584 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 42940584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60636000).

42940584 is an abundant number, since it is smaller than the sum of its proper divisors (78331416).

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

42940584 is a wasteful number, since it uses less digits than its factorization.

42940584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 42940584 is about 6552.9065306931. The cubic root of 42940584 is about 350.1783689471.

The spelling of 42940584 in words is "forty-two million, nine hundred forty thousand, five hundred eighty-four".