123045143243212 has 24 divisors (see below), whose sum is σ = 215373142366704. Its totient is φ = 61509960390912.

The previous prime is 123045143243177. The next prime is 123045143243213. The reversal of 123045143243212 is 212342341540321.

It is a super-3 number, since 3×123045143243212³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (123045143243213) 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, 1027482723 + ... + 1027602469.

It is an arithmetic number, because the mean of its divisors is an integer number (8973880931946).

Almost surely, 2^{123045143243212} is an apocalyptic number.

It is an amenable number.

123045143243212 is a deficient number, since it is larger than the sum of its proper divisors (92327999123492).

123045143243212 is a wasteful number, since it uses less digits than its factorization.

123045143243212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170265 (or 170263 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 123045143243212 its reverse (212342341540321), we get a palindrome (335387484783533).

The spelling of 123045143243212 in words is "one hundred twenty-three trillion, forty-five billion, one hundred forty-three million, two hundred forty-three thousand, two hundred twelve".