42248440 has 64 divisors (see below), whose sum is σ = 103420800. Its totient is φ = 15439872.

The previous prime is 42248399. The next prime is 42248449. The reversal of 42248440 is 4484224.

It is a junction number, because it is equal to n+sod(n) for n = 42248399 and 42248408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42248449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58401 + ... + 59119.

It is an arithmetic number, because the mean of its divisors is an integer number (1615950).

Almost surely, 2^42248440 is an apocalyptic number.

42248440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42248440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51710400).

42248440 is an abundant number, since it is smaller than the sum of its proper divisors (61172360).

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

42248440 is a wasteful number, since it uses less digits than its factorization.

42248440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 42248440 is about 6499.8799988923. The cubic root of 42248440 is about 348.2867016831.

The spelling of 42248440 in words is "forty-two million, two hundred forty-eight thousand, four hundred forty".