42223120145 has 4 divisors (see below), whose sum is σ = 50667744180. Its totient is φ = 33778496112.

The previous prime is 42223120127. The next prime is 42223120157. The reversal of 42223120145 is 54102132224.

42223120145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33436682449 + 8786437696 = 182857^2 + 93736^2 .

It is a cyclic number.

It is not a de Polignac number, because 42223120145 - 2⁶ = 42223120081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4222312010 + ... + 4222312019.

It is an arithmetic number, because the mean of its divisors is an integer number (12666936045).

Almost surely, 2^42223120145 is an apocalyptic number.

It is an amenable number.

42223120145 is a deficient number, since it is larger than the sum of its proper divisors (8444624035).

42223120145 is an equidigital number, since it uses as much as digits as its factorization.

42223120145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8444624034.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 42223120145 its reverse (54102132224), we get a palindrome (96325252369).

The spelling of 42223120145 in words is "forty-two billion, two hundred twenty-three million, one hundred twenty thousand, one hundred forty-five".