42107784 has 16 divisors (see below), whose sum is σ = 105269520. Its totient is φ = 14035920.

The previous prime is 42107783. The next prime is 42107801. The reversal of 42107784 is 48770124.

It is not an unprimeable number, because it can be changed into a prime (42107783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877222 + ... + 877269.

It is an arithmetic number, because the mean of its divisors is an integer number (6579345).

Almost surely, 2^42107784 is an apocalyptic number.

It is an amenable number.

42107784 is an abundant number, since it is smaller than the sum of its proper divisors (63161736).

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

42107784 is a wasteful number, since it uses less digits than its factorization.

42107784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754500 (or 1754496 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 42107784 is about 6489.0510862529. The cubic root of 42107784 is about 347.8997597403.

The spelling of 42107784 in words is "forty-two million, one hundred seven thousand, seven hundred eighty-four".