42121310203 has 8 divisors (see below), whose sum is σ = 48490018272. Its totient is φ = 35840446656.

The previous prime is 42121310191. The next prime is 42121310213. The reversal of 42121310203 is 30201312124.

It is a happy number.

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

It is not a de Polignac number, because 42121310203 - 2¹⁷ = 42121179131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42121310213) 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, 21960100 + ... + 21962017.

It is an arithmetic number, because the mean of its divisors is an integer number (6061252284).

Almost surely, 2^42121310203 is an apocalyptic number.

42121310203 is a deficient number, since it is larger than the sum of its proper divisors (6368708069).

42121310203 is a wasteful number, since it uses less digits than its factorization.

42121310203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43922261.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 42121310203 its reverse (30201312124), we get a palindrome (72322622327).

The spelling of 42121310203 in words is "forty-two billion, one hundred twenty-one million, three hundred ten thousand, two hundred three".