42555221424101 has 4 divisors (see below), whose sum is σ = 42555234608832. Its totient is φ = 42555208239372.

The previous prime is 42555221424077. The next prime is 42555221424161. The reversal of 42555221424101 is 10142412255524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42555221424101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555221424161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1869956 + ... + 9413138.

It is an arithmetic number, because the mean of its divisors is an integer number (10638808652208).

Almost surely, 2^{42555221424101} is an apocalyptic number.

It is an amenable number.

42555221424101 is a deficient number, since it is larger than the sum of its proper divisors (13184731).

42555221424101 is an equidigital number, since it uses as much as digits as its factorization.

42555221424101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13184730.

The product of its (nonzero) digits is 128000, while the sum is 38.

Adding to 42555221424101 its reverse (10142412255524), we get a palindrome (52697633679625).

The spelling of 42555221424101 in words is "forty-two trillion, five hundred fifty-five billion, two hundred twenty-one million, four hundred twenty-four thousand, one hundred one".