4042401320420 has 48 divisors (see below), whose sum is σ = 8782101639360. Its totient is φ = 1561144023936.

The previous prime is 4042401320411. The next prime is 4042401320423. The reversal of 4042401320420 is 240231042404.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4042401320420.

It is not an unprimeable number, because it can be changed into a prime (4042401320423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17098739 + ... + 17333541.

It is an arithmetic number, because the mean of its divisors is an integer number (182960450820).

Almost surely, 2^{4042401320420} is an apocalyptic number.

It is an amenable number.

4042401320420 is an abundant number, since it is smaller than the sum of its proper divisors (4739700318940).

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

4042401320420 is a wasteful number, since it uses less digits than its factorization.

4042401320420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264524 (or 264522 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 4042401320420 its reverse (240231042404), we get a palindrome (4282632362824).

The spelling of 4042401320420 in words is "four trillion, forty-two billion, four hundred one million, three hundred twenty thousand, four hundred twenty".