42123323155 has 8 divisors (see below), whose sum is σ = 50882743584. Its totient is φ = 33475488000.

The previous prime is 42123323153. The next prime is 42123323173. The reversal of 42123323155 is 55132332124.

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

It is not a de Polignac number, because 42123323155 - 2¹ = 42123323153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42123323153) 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, 27895486 + ... + 27896995.

It is an arithmetic number, because the mean of its divisors is an integer number (6360342948).

Almost surely, 2^42123323155 is an apocalyptic number.

42123323155 is a deficient number, since it is larger than the sum of its proper divisors (8759420429).

42123323155 is a wasteful number, since it uses less digits than its factorization.

42123323155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55792637.

The product of its digits is 21600, while the sum is 31.

Adding to 42123323155 its reverse (55132332124), we get a palindrome (97255655279).

The spelling of 42123323155 in words is "forty-two billion, one hundred twenty-three million, three hundred twenty-three thousand, one hundred fifty-five".