42404424520 has 16 divisors (see below), whose sum is σ = 95409955260. Its totient is φ = 16961769792.

The previous prime is 42404424511. The next prime is 42404424527. The reversal of 42404424520 is 2542440424.

It can be written as a sum of positive squares in 2 ways, for example, as 42361049124 + 43375396 = 205818^2 + 6586^2 .

It is not an unprimeable number, because it can be changed into a prime (42404424527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530055267 + ... + 530055346.

Almost surely, 2^42404424520 is an apocalyptic number.

42404424520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42404424520 is an abundant number, since it is smaller than the sum of its proper divisors (53005530740).

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

42404424520 is a wasteful number, since it uses less digits than its factorization.

42404424520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060110624 (or 1060110620 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 31.

Adding to 42404424520 its reverse (2542440424), we get a palindrome (44946864944).

The spelling of 42404424520 in words is "forty-two billion, four hundred four million, four hundred twenty-four thousand, five hundred twenty".