42521730800 has 90 divisors (see below), whose sum is σ = 102660216528. Its totient is φ = 16925555840.

The previous prime is 42521730793. The next prime is 42521730809. The reversal of 42521730800 is 803712524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521730809) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20610569 + ... + 20612631.

Almost surely, 2^42521730800 is an apocalyptic number.

42521730800 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 42521730800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51330108264).

42521730800 is an abundant number, since it is smaller than the sum of its proper divisors (60138485728).

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

42521730800 is a wasteful number, since it uses less digits than its factorization.

42521730800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 42521730800 in words is "forty-two billion, five hundred twenty-one million, seven hundred thirty thousand, eight hundred".