4021402422042 has 80 divisors (see below), whose sum is σ = 9107404713792. Its totient is φ = 1326148225920.

The previous prime is 4021402422029. The next prime is 4021402422047. The reversal of 4021402422042 is 2402242041204.

4021402422042 is a `hidden beast` number, since 4 + 0 + 214 + 0 + 242 + 204 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4021402421997 and 4021402422015.

It is not an unprimeable number, because it can be changed into a prime (4021402422047) 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 39 ways as a sum of consecutive naturals, for example, 12723042 + ... + 13035282.

Almost surely, 2^{4021402422042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4021402422042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4553702356896).

4021402422042 is an abundant number, since it is smaller than the sum of its proper divisors (5086002291750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4021402422042 is a wasteful number, since it uses less digits than its factorization.

4021402422042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313105 (or 313096 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 4021402422042 its reverse (2402242041204), we get a palindrome (6423644463246).

It can be divided in two parts, 4021402 and 422042, that added together give a palindrome (4443444).

The spelling of 4021402422042 in words is "four trillion, twenty-one billion, four hundred two million, four hundred twenty-two thousand, forty-two".