42121424433242 has 128 divisors (see below), whose sum is σ = 80091918789120. Its totient is φ = 16137481789440.

The previous prime is 42121424433203. The next prime is 42121424433247. The reversal of 42121424433242 is 24233442412124.

It is a super-2 number, since 2×42121424433242² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42121424433196 and 42121424433205.

It is not an unprimeable number, because it can be changed into a prime (42121424433247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11356542884 + ... + 11356546592.

It is an arithmetic number, because the mean of its divisors is an integer number (625718115540).

Almost surely, 2^{42121424433242} is an apocalyptic number.

42121424433242 is a deficient number, since it is larger than the sum of its proper divisors (37970494355878).

42121424433242 is a wasteful number, since it uses less digits than its factorization.

42121424433242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568.

The product of its digits is 294912, while the sum is 38.

Adding to 42121424433242 its reverse (24233442412124), we get a palindrome (66354866845366).

The spelling of 42121424433242 in words is "forty-two trillion, one hundred twenty-one billion, four hundred twenty-four million, four hundred thirty-three thousand, two hundred forty-two".