42121101203 has 4 divisors (see below), whose sum is σ = 42128640528. Its totient is φ = 42113561880.

The previous prime is 42121101181. The next prime is 42121101241. The reversal of 42121101203 is 30210112124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42121101203 - 2²⁰ = 42120052627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42121101103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3761276 + ... + 3772457.

It is an arithmetic number, because the mean of its divisors is an integer number (10532160132).

Almost surely, 2^42121101203 is an apocalyptic number.

42121101203 is a deficient number, since it is larger than the sum of its proper divisors (7539325).

42121101203 is an equidigital number, since it uses as much as digits as its factorization.

42121101203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7539324.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 42121101203 its reverse (30210112124), we get a palindrome (72331213327).

The spelling of 42121101203 in words is "forty-two billion, one hundred twenty-one million, one hundred one thousand, two hundred three".