42421241021 has 8 divisors (see below), whose sum is σ = 42780325824. Its totient is φ = 42063184800.

The previous prime is 42421240949. The next prime is 42421241029. The reversal of 42421241021 is 12014212424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42421241021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42421241029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174200 + ... + 339393.

It is an arithmetic number, because the mean of its divisors is an integer number (5347540728).

Almost surely, 2^42421241021 is an apocalyptic number.

It is an amenable number.

42421241021 is a deficient number, since it is larger than the sum of its proper divisors (359084803).

42421241021 is a wasteful number, since it uses less digits than its factorization.

42421241021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514291.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 42421241021 its reverse (12014212424), we get a palindrome (54435453445).

The spelling of 42421241021 in words is "forty-two billion, four hundred twenty-one million, two hundred forty-one thousand, twenty-one".