42121334100 has 36 divisors (see below), whose sum is σ = 121871060864. Its totient is φ = 11232355680.

The previous prime is 42121334089. The next prime is 42121334111. The reversal of 42121334100 is 143312124.

It is an interprime number because it is at equal distance from previous prime (42121334089) and next prime (42121334111).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70201924 + ... + 70202523.

Almost surely, 2^42121334100 is an apocalyptic number.

It is an amenable number.

42121334100 is an abundant number, since it is smaller than the sum of its proper divisors (79749726764).

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

42121334100 is a wasteful number, since it uses less digits than its factorization.

42121334100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140404464 (or 140404457 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 42121334100 its reverse (143312124), we get a palindrome (42264646224).

The spelling of 42121334100 in words is "forty-two billion, one hundred twenty-one million, three hundred thirty-four thousand, one hundred".