4042344421021 has 8 divisors (see below), whose sum is σ = 4087723046400. Its totient is φ = 3997209113232.

The previous prime is 4042344420953. The next prime is 4042344421121. The reversal of 4042344421021 is 1201244432404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4042344421021 - 2¹³ = 4042344412829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042344421121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60795985 + ... + 60862438.

It is an arithmetic number, because the mean of its divisors is an integer number (510965380800).

Almost surely, 2^{4042344421021} is an apocalyptic number.

It is an amenable number.

4042344421021 is a deficient number, since it is larger than the sum of its proper divisors (45378625379).

4042344421021 is a wasteful number, since it uses less digits than its factorization.

4042344421021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121658795.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 4042344421021 its reverse (1201244432404), we get a palindrome (5243588853425).

The spelling of 4042344421021 in words is "four trillion, forty-two billion, three hundred forty-four million, four hundred twenty-one thousand, twenty-one".