42103141221 has 4 divisors (see below), whose sum is σ = 56137521632. Its totient is φ = 28068760812.

The previous prime is 42103141193. The next prime is 42103141243. The reversal of 42103141221 is 12214130124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42103141221 - 2⁵ = 42103141189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42103141261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7017190201 + ... + 7017190206.

It is an arithmetic number, because the mean of its divisors is an integer number (14034380408).

Almost surely, 2^42103141221 is an apocalyptic number.

It is an amenable number.

42103141221 is a deficient number, since it is larger than the sum of its proper divisors (14034380411).

42103141221 is a wasteful number, since it uses less digits than its factorization.

42103141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14034380410.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 42103141221 its reverse (12214130124), we get a palindrome (54317271345).

The spelling of 42103141221 in words is "forty-two billion, one hundred three million, one hundred forty-one thousand, two hundred twenty-one".