42013121300 has 18 divisors (see below), whose sum is σ = 91168473438. Its totient is φ = 16805248480.

The previous prime is 42013121299. The next prime is 42013121321. The reversal of 42013121300 is 312131024.

It can be written as a sum of positive squares in 3 ways, for example, as 6136215556 + 35876905744 = 78334^2 + 189412^2 .

It is a super-2 number, since 2×42013121300² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210065507 + ... + 210065706.

It is an arithmetic number, because the mean of its divisors is an integer number (5064915191).

Almost surely, 2^42013121300 is an apocalyptic number.

It is an amenable number.

42013121300 is an abundant number, since it is smaller than the sum of its proper divisors (49155352138).

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

42013121300 is a wasteful number, since it uses less digits than its factorization.

42013121300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420131227 (or 420131220 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 42013121300 its reverse (312131024), we get a palindrome (42325252324).

The spelling of 42013121300 in words is "forty-two billion, thirteen million, one hundred twenty-one thousand, three hundred".