42238900 has 144 divisors (see below), whose sum is σ = 109992960. Its totient is φ = 13910400.

The previous prime is 42238891. The next prime is 42238913. The reversal of 42238900 is 983224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 898677 + ... + 898723.

It is an arithmetic number, because the mean of its divisors is an integer number (763840).

Almost surely, 2^42238900 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 42238900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54996480).

42238900 is an abundant number, since it is smaller than the sum of its proper divisors (67754060).

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

42238900 is a wasteful number, since it uses less digits than its factorization.

42238900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 42238900 is about 6499.1460977578. The cubic root of 42238900 is about 348.2604845000.

The spelling of 42238900 in words is "forty-two million, two hundred thirty-eight thousand, nine hundred".