4021423122792 has 64 divisors (see below), whose sum is σ = 10582931419200. Its totient is φ = 1269894412800.

The previous prime is 4021423122733. The next prime is 4021423122793. The reversal of 4021423122792 is 2972213241204.

It is a happy number.

It is a super-2 number, since 2×4021423122792² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4021423122792.

It is not an unprimeable number, because it can be changed into a prime (4021423122793) 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 15 ways as a sum of consecutive naturals, for example, 30238042 + ... + 30370742.

It is an arithmetic number, because the mean of its divisors is an integer number (165358303425).

Almost surely, 2^{4021423122792} is an apocalyptic number.

It is an amenable number.

4021423122792 is an abundant number, since it is smaller than the sum of its proper divisors (6561508296408).

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

4021423122792 is a wasteful number, since it uses less digits than its factorization.

4021423122792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199186 (or 199182 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

Adding to 4021423122792 its reverse (2972213241204), we get a palindrome (6993636363996).

The spelling of 4021423122792 in words is "four trillion, twenty-one billion, four hundred twenty-three million, one hundred twenty-two thousand, seven hundred ninety-two".