42005620141643 has 4 divisors (see below), whose sum is σ = 42005639580528. Its totient is φ = 42005600702760.

The previous prime is 42005620141631. The next prime is 42005620141649. The reversal of 42005620141643 is 34614102650024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42005620141643 - 2¹⁶ = 42005620076107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42005620141597 and 42005620141606.

It is not an unprimeable number, because it can be changed into a prime (42005620141649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6004871 + ... + 10957632.

It is an arithmetic number, because the mean of its divisors is an integer number (10501409895132).

Almost surely, 2^{42005620141643} is an apocalyptic number.

42005620141643 is a deficient number, since it is larger than the sum of its proper divisors (19438885).

42005620141643 is a wasteful number, since it uses less digits than its factorization.

42005620141643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19438884.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 42005620141643 its reverse (34614102650024), we get a palindrome (76619722791667).

The spelling of 42005620141643 in words is "forty-two trillion, five billion, six hundred twenty million, one hundred forty-one thousand, six hundred forty-three".