42042424100 has 18 divisors (see below), whose sum is σ = 91232060514. Its totient is φ = 16816969600.

The previous prime is 42042424093. The next prime is 42042424103. The reversal of 42042424100 is 142424024.

It can be written as a sum of positive squares in 3 ways, for example, as 521026276 + 41521397824 = 22826^2 + 203768^2 .

It is not an unprimeable number, because it can be changed into a prime (42042424103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210212021 + ... + 210212220.

Almost surely, 2^42042424100 is an apocalyptic number.

It is an amenable number.

42042424100 is an abundant number, since it is smaller than the sum of its proper divisors (49189636414).

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

42042424100 is a wasteful number, since it uses less digits than its factorization.

42042424100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420424255 (or 420424248 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 42042424100 its reverse (142424024), we get a palindrome (42184848124).

The spelling of 42042424100 in words is "forty-two billion, forty-two million, four hundred twenty-four thousand, one hundred".