42043424520 has 128 divisors (see below), whose sum is σ = 127459382400. Its totient is φ = 11093981184.

The previous prime is 42043424503. The next prime is 42043424543. The reversal of 42043424520 is 2542434024.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5216814 + ... + 5224866.

It is an arithmetic number, because the mean of its divisors is an integer number (995776425).

Almost surely, 2^42043424520 is an apocalyptic number.

42043424520 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 42043424520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63729691200).

42043424520 is an abundant number, since it is smaller than the sum of its proper divisors (85415957880).

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

42043424520 is a wasteful number, since it uses less digits than its factorization.

42043424520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8519 (or 8515 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 42043424520 its reverse (2542434024), we get a palindrome (44585858544).

The spelling of 42043424520 in words is "forty-two billion, forty-three million, four hundred twenty-four thousand, five hundred twenty".