42545320000 has 140 divisors (see below), whose sum is σ = 109139423580. Its totient is φ = 16430848000.

The previous prime is 42545319953. The next prime is 42545320007. The reversal of 42545320000 is 2354524.

It can be written as a sum of positive squares in 10 ways, for example, as 19236580416 + 23308739584 = 138696^2 + 152672^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (42545320007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1141662 + ... + 1178338.

Almost surely, 2^42545320000 is an apocalyptic number.

42545320000 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 42545320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54569711790).

42545320000 is an abundant number, since it is smaller than the sum of its proper divisors (66594103580).

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

42545320000 is an equidigital number, since it uses as much as digits as its factorization.

42545320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36738 (or 36713 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 42545320000 its reverse (2354524), we get a palindrome (42547674524).

The spelling of 42545320000 in words is "forty-two billion, five hundred forty-five million, three hundred twenty thousand".