42851904 has 56 divisors (see below), whose sum is σ = 114787680. Its totient is φ = 14106624.

The previous prime is 42851899. The next prime is 42851911. The reversal of 42851904 is 40915824.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14592 + ... + 17280.

It is an arithmetic number, because the mean of its divisors is an integer number (2049780).

Almost surely, 2^42851904 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 42851904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57393840).

42851904 is an abundant number, since it is smaller than the sum of its proper divisors (71935776).

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

42851904 is a wasteful number, since it uses less digits than its factorization.

42851904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 42851904 is about 6546.1365705277. The cubic root of 42851904 is about 349.9371424534.

The spelling of 42851904 in words is "forty-two million, eight hundred fifty-one thousand, nine hundred four".