42208404 has 72 divisors (see below), whose sum is σ = 119585088. Its totient is φ = 11531520.

The previous prime is 42208403. The next prime is 42208417. The reversal of 42208404 is 40480224.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42208403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11964 + ... + 15084.

It is an arithmetic number, because the mean of its divisors is an integer number (1660904).

Almost surely, 2^42208404 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 42208404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59792544).

42208404 is an abundant number, since it is smaller than the sum of its proper divisors (77376684).

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

42208404 is a wasteful number, since it uses less digits than its factorization.

42208404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165 (or 3156 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 42208404 is about 6496.7995197636. The cubic root of 42208404 is about 348.1766509663.

Adding to 42208404 its reverse (40480224), we get a palindrome (82688628).

The spelling of 42208404 in words is "forty-two million, two hundred eight thousand, four hundred four".