42122120223 has 4 divisors (see below), whose sum is σ = 56162826968. Its totient is φ = 28081413480.

The previous prime is 42122120207. The next prime is 42122120231. The reversal of 42122120223 is 32202122124.

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

It is not a de Polignac number, because 42122120223 - 2⁴ = 42122120207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42122120223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42122120233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7020353368 + ... + 7020353373.

It is an arithmetic number, because the mean of its divisors is an integer number (14040706742).

Almost surely, 2^42122120223 is an apocalyptic number.

42122120223 is a deficient number, since it is larger than the sum of its proper divisors (14040706745).

42122120223 is a wasteful number, since it uses less digits than its factorization.

42122120223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14040706744.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 42122120223 its reverse (32202122124), we get a palindrome (74324242347).

The spelling of 42122120223 in words is "forty-two billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twenty-three".