42543331320 has 64 divisors (see below), whose sum is σ = 145862853120. Its totient is φ = 9724189824.

The previous prime is 42543331309. The next prime is 42543331339. The reversal of 42543331320 is 2313334524.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25322572 + ... + 25324251.

It is an arithmetic number, because the mean of its divisors is an integer number (2279107080).

Almost surely, 2^42543331320 is an apocalyptic number.

42543331320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42543331320 is an abundant number, since it is smaller than the sum of its proper divisors (103319521800).

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

42543331320 is a wasteful number, since it uses less digits than its factorization.

42543331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50646844 (or 50646840 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 42543331320 its reverse (2313334524), we get a palindrome (44856665844).

The spelling of 42543331320 in words is "forty-two billion, five hundred forty-three million, three hundred thirty-one thousand, three hundred twenty".