42004854 has 48 divisors (see below), whose sum is σ = 95588064. Its totient is φ = 13305600.

The previous prime is 42004843. The next prime is 42004861. The reversal of 42004854 is 45840024.

It is a super-2 number, since 2×42004854² = 3528815519122632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99564 + ... + 99984.

It is an arithmetic number, because the mean of its divisors is an integer number (1991418).

Almost surely, 2^42004854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42004854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47794032).

42004854 is an abundant number, since it is smaller than the sum of its proper divisors (53583210).

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

42004854 is a wasteful number, since it uses less digits than its factorization.

42004854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 42004854 is about 6481.1151818186. The cubic root of 42004854 is about 347.6160549516.

Adding to 42004854 its reverse (45840024), we get a palindrome (87844878).

The spelling of 42004854 in words is "forty-two million, four thousand, eight hundred fifty-four".