42121240441 has 8 divisors (see below), whose sum is σ = 48203706560. Its totient is φ = 36055060848.

The previous prime is 42121240393. The next prime is 42121240451. The reversal of 42121240441 is 14404212124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42121240441 - 2¹³ = 42121232249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42121240451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4066086 + ... + 4076431.

It is an arithmetic number, because the mean of its divisors is an integer number (6025463320).

Almost surely, 2^42121240441 is an apocalyptic number.

It is an amenable number.

42121240441 is a deficient number, since it is larger than the sum of its proper divisors (6082466119).

42121240441 is an equidigital number, since it uses as much as digits as its factorization.

42121240441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8143263.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 42121240441 its reverse (14404212124), we get a palindrome (56525452565).

The spelling of 42121240441 in words is "forty-two billion, one hundred twenty-one million, two hundred forty thousand, four hundred forty-one".