42439320 has 192 divisors, whose sum is σ = 172074240. Its totient is φ = 8812800.

The previous prime is 42439307. The next prime is 42439381. The reversal of 42439320 is 2393424.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 26955 + ... + 28485.

It is an arithmetic number, because the mean of its divisors is an integer number (896220).

Almost surely, 2^42439320 is an apocalyptic number.

42439320 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 42439320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86037120).

42439320 is an abundant number, since it is smaller than the sum of its proper divisors (129634920).

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

42439320 is a wasteful number, since it uses less digits than its factorization.

42439320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1559 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 42439320 is about 6514.5467992793. The cubic root of 42439320 is about 348.8104377470.

The spelling of 42439320 in words is "forty-two million, four hundred thirty-nine thousand, three hundred twenty".