42000684 has 48 divisors (see below), whose sum is σ = 108743040. Its totient is φ = 12509440.

The previous prime is 42000683. The next prime is 42000701. The reversal of 42000684 is 48600024.

It is not an unprimeable number, because it can be changed into a prime (42000683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5092 + ... + 10484.

It is an arithmetic number, because the mean of its divisors is an integer number (2265480).

Almost surely, 2^42000684 is an apocalyptic number.

42000684 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42000684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54371520).

42000684 is an abundant number, since it is smaller than the sum of its proper divisors (66742356).

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

42000684 is a wasteful number, since it uses less digits than its factorization.

42000684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470 (or 5468 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 42000684 is about 6480.7934699387. The cubic root of 42000684 is about 347.6045514643.

The spelling of 42000684 in words is "forty-two million, six hundred eighty-four", and thus it is an aban number.