42520640536 has 64 divisors (see below), whose sum is σ = 90201924000. Its totient is φ = 18613647360.

The previous prime is 42520640521. The next prime is 42520640549. The reversal of 42520640536 is 63504602524.

It is a junction number, because it is equal to n+sod(n) for n = 42520640495 and 42520640504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 992160 + ... + 1034128.

Almost surely, 2^42520640536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42520640536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45100962000).

42520640536 is an abundant number, since it is smaller than the sum of its proper divisors (47681283464).

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

42520640536 is a wasteful number, since it uses less digits than its factorization.

42520640536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42412 (or 42408 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 42520640536 in words is "forty-two billion, five hundred twenty million, six hundred forty thousand, five hundred thirty-six".