42002031203221 has 8 divisors (see below), whose sum is σ = 42356273652000. Its totient is φ = 41648298091920.

The previous prime is 42002031203207. The next prime is 42002031203257. The reversal of 42002031203221 is 12230213020024.

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 42002031203221 - 2⁵ = 42002031203189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42002031203192 and 42002031203201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42002031273221) 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, 127168746 + ... + 127498603.

It is an arithmetic number, because the mean of its divisors is an integer number (5294534206500).

Almost surely, 2^{42002031203221} is an apocalyptic number.

It is an amenable number.

42002031203221 is a deficient number, since it is larger than the sum of its proper divisors (354242448779).

42002031203221 is a wasteful number, since it uses less digits than its factorization.

42002031203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254668739.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 42002031203221 its reverse (12230213020024), we get a palindrome (54232244223245).

The spelling of 42002031203221 in words is "forty-two trillion, two billion, thirty-one million, two hundred three thousand, two hundred twenty-one".