42229720 has 48 divisors (see below), whose sum is σ = 102904560. Its totient is φ = 15590016.

The previous prime is 42229709. The next prime is 42229739. The reversal of 42229720 is 2792224.

42229720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3637 + ... + 9883.

It is an arithmetic number, because the mean of its divisors is an integer number (2143845).

Almost surely, 2^42229720 is an apocalyptic number.

42229720 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 42229720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51452280).

42229720 is an abundant number, since it is smaller than the sum of its proper divisors (60674840).

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

42229720 is a wasteful number, since it uses less digits than its factorization.

42229720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6284 (or 6267 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 42229720 is about 6498.4398127551. The cubic root of 42229720 is about 348.2352529174.

The spelling of 42229720 in words is "forty-two million, two hundred twenty-nine thousand, seven hundred twenty".