42543121300 has 36 divisors (see below), whose sum is σ = 92327875360. Its totient is φ = 17015533920.

The previous prime is 42543121297. The next prime is 42543121303. The reversal of 42543121300 is 312134524.

It is an interprime number because it is at equal distance from previous prime (42543121297) and next prime (42543121303).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42543121303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1547071 + ... + 1574329.

Almost surely, 2^42543121300 is an apocalyptic number.

It is an amenable number.

42543121300 is an abundant number, since it is smaller than the sum of its proper divisors (49784754060).

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

42543121300 is a wasteful number, since it uses less digits than its factorization.

42543121300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42880 (or 42873 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 42543121300 its reverse (312134524), we get a palindrome (42855255824).

The spelling of 42543121300 in words is "forty-two billion, five hundred forty-three million, one hundred twenty-one thousand, three hundred".