42121430224 has 10 divisors (see below), whose sum is σ = 81610271090. Its totient is φ = 21060715104.

The previous prime is 42121430177. The next prime is 42121430227. The reversal of 42121430224 is 42203412124.

It can be written as a sum of positive squares in only one way, i.e., 41763009600 + 358420624 = 204360^2 + 18932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42121430227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1316294679 + ... + 1316294710.

It is an arithmetic number, because the mean of its divisors is an integer number (8161027109).

Almost surely, 2^42121430224 is an apocalyptic number.

It is an amenable number.

42121430224 is a deficient number, since it is larger than the sum of its proper divisors (39488840866).

42121430224 is a wasteful number, since it uses less digits than its factorization.

42121430224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632589397 (or 2632589391 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 42121430224 its reverse (42203412124), we get a palindrome (84324842348).

The spelling of 42121430224 in words is "forty-two billion, one hundred twenty-one million, four hundred thirty thousand, two hundred twenty-four".