42448140 has 144 divisors (see below), whose sum is σ = 149909760. Its totient is φ = 9521280.

The previous prime is 42448103. The next prime is 42448151. The reversal of 42448140 is 4184424.

It is a happy number.

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, 74055 + ... + 74625.

It is an arithmetic number, because the mean of its divisors is an integer number (1041040).

Almost surely, 2^42448140 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 42448140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74954880).

42448140 is an abundant number, since it is smaller than the sum of its proper divisors (107461620).

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

42448140 is a wasteful number, since it uses less digits than its factorization.

42448140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 42448140 is about 6515.2237106641. The cubic root of 42448140 is about 348.8346000487.

The spelling of 42448140 in words is "forty-two million, four hundred forty-eight thousand, one hundred forty".